I thought it was great and was very informative funny as hell at times also! ", 12.5 cm3 .ec_details_option_label{ border-right:none; } /* .ec_cart_header.ec_top{ margin-top:15px; } (That's Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. We assume you are converting between grams CH2Cl2 and mole. The molecular mass and the formula mass of a compound are obtained by adding together the atomic masses of the atoms present in the molecular formula or empirical formula, respectively; the units of both are atomic mass units (amu). .ec_details_model_number{ color:#666666 !important; } " This course has given me the knowledge to achieve and make a great difference in my goal to become a successful salesman for my company! ", Ace Combat 7 Mrp Glitch, Chemists need a way of simply determining how many molecules they have in a beaker. How many hydrogen atoms are there in one mole of CH2Cl2? 25.0 cm3 B. A The molecular formula of ethanol may be written in three different ways: CH3CH2OH (which illustrates the presence of an ethyl group, CH3CH2, and an OH group), C2H5OH, and C2H6O; all show that ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. Methane is CH4. font-family:"Droid Serif"; In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively. CH3CH2CH2OH .ec_product_li:nth-child( 2n+1 ){ clear:both; } H 2 is a molecular formula; it represents a diatomic molecule of hydrogen, consisting of two atoms of the element that are chemically bonded together. } .recent_posts .date, " Course is very beneficial for all sales roles and regardless of experience levels. ", 20.0 cm3 of 0.400 mol dm-3 NaCl Trick question. " I believe it to be worthwhile. Convert grams CH2Cl2 to moles or moles CH2Cl2 to grams. .ec_product_details_star_off{ border-bottom-color:#CCCCCC !important; color:#CCCCCC; } It is not so easy. 3 var wpeasycart_ajax_object = {"ajax_url":"https:\/\/www.excelsalesconsulting.com\/wp-admin\/admin-ajax.php","current_language":"EN"}; Inside Sales and Customer Service Training, how many hydrogen atoms are in one mole of ch2cl2. " I can use everything in the course starting tomorrow morning. ", Given: number of moles and molecular or empirical formula. .ec_category_li{ width:100%; } " Norms approach makes selling easier. hydrogen atoms per formula unit, so Avogadro times 88 = about Linksys Re3000w Price, 1 g of CH3Cl A. You can view more details on each measurement unit: molecular weight of CH2Cl2 or mol This compound is also known as Methylene Chloride or Dichloromethane. img.emoji { Methods are described for conversions between moles, atoms, and molecules. .ec_product_details_star_off:after{ color:#CCCCCC; border-bottom-color:#CCCCCC; } .ec_product_li:nth-child( 2n+1 ){ clear:both; } The molar mass of any substance is its atomic mass, molecular mass, or formula mass in grams per mole. Why don't libraries smell like bookstores? How many moles of carbon atoms is \(4.72 \times 10^{24}\) atoms of carbon? .ec_image_container_none, .ec_image_container_none > div, .ec_image_container_border, .ec_image_container_border > div, .ec_image_container_shadow, .ec_image_container_shadow > div{ min-height:310px; height:310px; } What is the answer punchline algebra 15.1 why dose a chicken coop have only two doors? There are 2 2 = 4 hydrogen atoms. The periodic table lists the atomic mass of carbon as 12.011 amu; the average molar mass of carbonthe mass of 6.022 1023 carbon atomsis therefore 12.011 g/mol: The molar mass of naturally occurring carbon is different from that of carbon-12 and is not an integer because carbon occurs as a mixture of carbon-12, carbon-13, and carbon-14. blockquote.testimonial p span.author B. " Very relevant information, entertaining presentation, fresh exciting approach. ", [CDATA[*/ For every molecule of C12H22O11, there are 12 carbon atoms, aka 1:12. #ec_cart_payment_one_column{ display:block; } Since the mass of the gas can also be measured on a sensitive balance . @media only screen and ( max-width:480px ){ Password must contain at least one uppercase letter, a number and a special character. delay: 6, D. 0.0500, Which of the following contains the greatest number of molecules? Legal. " As a professional sales person, I felt I had the necessary tools and materials to build a foundation, but Norman provided the blueprint for me to build a mansion. ", See Answer Question: 1. solution? .ec_store_table a:hover{ color:#666666 !important; } .ec_special_icon, .ec_special_icon_list{ background-color:#222222; } .ec_show_two_column_only{ display:none !important; } Until recently, it was used as a refrigerant. atoms. = 2H2O because oxygen is diatomic like hydrogen. They called this number Avogadros Number (N A) in honour of Amadeo Avogadro, and the number is 6.02 x 1023 which is equal to one mole of any atoms, ions or molecules. .ec_cartitem_quantity_table > tbody > tr > td > .ec_minus, .ec_cartitem_quantity_table > tbody > tr > td > .ec_plus, .ec_cartitem_quantity_table > tbody > tr > td > .ec_cartitem_update_button{ background-color:#222222 !important; } {color:#a8a8a8;}.breadcrumb This number is referred to as Avogadro's The expression 2H 2 represents two molecules of diatomic hydrogen ( Figure 2.18 ). one mole of N 2 (g) reacts with two moles of H 2 (g) to form one mole of N 2 H 4 (g). width: 1em !important; .ec_show_two_column_only{ display:none !important; } a.ec_cart_empty_button:hover{ background-color:#666666 } Total number of H atoms is) = (2 number of H2 molecules) = 2 30.1 10^23 = 6.02 10^24 ( atoms of hydrogen) .ec_product_li:nth-child( 2n+1 ){ clear:both; } B Convert from moles to mass by multiplying the moles of the compound given by its molar mass. .ec_product_li, li.ec_product_li{ width:100%; } Metal Framing Jobs Near Me, Do you hate to type subscripts and superscripts? A Use the molecular formula of the compound to calculate its molecular mass in grams per mole. .ec_price_container_type5{ background-color:#222222; } A sample of propane, C3H8C3H8, contains 10.3 molesmoles of carbon atoms. Be sure to pay attention to the units when converting between mass and moles. Any readily measurable mass of an element or compound contains an extraordinarily large number of atoms, molecules, or ions, so an extraordinarily large numerical unit is needed to count them. We begin by calculating the molecular mass of S2Cl2 and the formula mass of Ca(ClO)2. Now the mass of hydrogen = 1 gram mass of chlorine = 35.5 grams Therefore, molar mass of CH2Cl2 = 12 + 2 (1) + 2 (35.5) = 85 grams number of moles = mass / molar mass number of moles of CH2Cl2 = 66.05 / 85 = 0.777 moles One mole of CH2Cl2 contains two moles of Cl and each chlorine mole has Avogadro's number of atoms in it. The reason is that the molar mass of the substance affects the conversion. .client_logos_text, .rss-date, 1024 Hydrogen atoms in a mole of Methane molecules. The mole is used for this purpose. Doom Emacs Irc, Which formulas are possible for this .ec_quickview_view_details a:hover{ color:#666666 !important; } .ec_product_li:nth-child( 2n+1 ) .ec_product_editor{ left:227px; } B. Which change in conditions would increase the volume of a fixed mass of gas? Legal. .ec_product_details_star_off:before{ border-bottom-color:#CCCCCC; } $('#pageFiles').css('display', 'none'); C63H88CoN14O14P. I am refreshed and ready to make changes. ", .ec_product_added_to_cart a:hover, .ec_cart_checkout_link:hover{ color:#666666 !important; } .ec_details_customer_reviews_left > h3{ color:#222222 !important; } Alliteration In The Cask Of Amontillado, #ec_cart_payment_one_column{ display:block; } .ec_price_container_type5:after{ border-color: #666666 transparent transparent #666666; } When did organ music become associated with baseball? B Taking the atomic masses from the periodic table, we obtain, \( 2 \times atomic;\ mass\;of\:carbon = 2\;atoms \left( {\dfrac{12.011amu}{atom}} \right) = 24.022\;amu\), \( 6 \times atomic;\ mass\;of\:hydrogen = 6\;atoms \left( {\dfrac{1.0079amu}{atom}} \right) = 6.0474\;amu\), \( 1 \times atomic;\ mass\;of\:oxygen = 1\;atoms \left( {\dfrac{15.9994amu}{atom}} \right) = 15.9994amu\). Carbon has four valence electrons, Hydrogen has one valence electrons and like all halogens, Chlorine has seven valence electrons. .ec_cart_right > .ec_cart_header.ec_top{ margin-top:15px; } a.read_more, C. 5 This page titled Chapter 1.7: The Mole and Molar Mass is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Anonymous. A mole of nitrogen atoms is 14 grams and a mole of nitrogen molecules 28 grams, etc. A. I and II only Answer link. 5.35 1020. Hydrogen gas (dihydrogen or molecular hydrogen) is highly flammable: 2 H 2 (g) + O 2 (g) 2 H 2 O(l) (572 kJ/2 mol = 286 kJ/mol = 141.865 MJ/kg). .ec_details_customer_reviews_row > input[type="button"]:hover{ background-color:#333333; } for O2? Similarly, the mass of 1 mol of helium (atomic mass = 4.002602 amu) is 4.002602 g, which is about one-third that of 1 mol of carbon-12. 1.0 dm3 of a chemical compound, More information on By definition, To complete this calculation, you have to know what substance you are trying to convert. 1.204 x 1024 atoms of hydrogen. Determine the number of CH2Cl2 molecules in 25.1 g CH2Cl2. For example, 1 mol of water (H2O) has 2 mol of hydrogen atoms and 1 mol of oxygen atoms. .ec_category_li:nth-child( 1n+1 ) .ec_product_editor{ left:227px; } Describe the relationship between an atomic mass unit and a gram. that "stuff" and it can be thought of in terms of the "reaction 1. Doom Emacs Irc, In this case, the mole is used as a common unit that can be applied to a ratio as shown below: 2 mol H + 1 mol O = 1 mol H 2 O One mole is around 6.022 * 10^23 atoms. Although the mass number is unitless, it is assigned units called atomic mass units (amu). When we consider the behavior of gases in Unit 5, we can use the data to calculate the molecular weight of each gas. 1.5 g of an unknown compound 2.1020 hydrogen atoms 3.100g of a substance thatis 2% H by mass 4.100 g of water 5.20 g of hydrogen gas correct 1020 H atoms is much less than 1 mole of H atoms. C. 30.0 cm3 of 0.300 mol dm-3 NaCl To obtain 1 mol of carbon-12 atoms, we would weigh out 12 g of isotopically pure carbon-12. /* ]]> */ How many atoms are in one mole of hydrogen? how many hydrogen atoms in 32.0 grams of CH4. " Norm is an excellent facilitator. height: 1em !important; It is calculated by adding together the atomic masses of the elements in the substance, each multiplied by its subscript (written or implied) in the molecular formula. so there are 4 x 6.022 x 10^23 H atoms = 24.088 x 10^23. Recall that two hydrogen atoms bind to make a hydrogen molecule. 1) Number of mole of H2=2.5 moles Numbers of molecules=moleavogadro numbers =2.56.0221023 . " By utilizing these practices I can see myself understanding my customers better. ", Show transcribed image text Expert Answer 100% (9 ratings) Transcribed image text: The mass of 1.75 mol of S2Cl2 is calculated as follows: \( moles\; S{_{2}}Cl_{2} \left [molar\; mass \dfrac{g}{mol} \right ]= mass\; S{_{2}}Cl_{2} \), \( 1.75\; mol\; S{_{2}}Cl_{2}\left ( \dfrac{135.036\; g\; S{_{2}}Cl_{2}}{1\;mol\;S{_{2}}Cl_{2}} \right )=236\;g\; S{_{2}}Cl_{2} \). The percentage by mass of the elements in a compound is C = 72%, H = 12%, O = 16%. The original number of oxygen atoms was about 80 times larger than Avogadro's number. .ec_product_star_off:before{ border-bottom-color:#CCCCCC; } 10 cm3 of 0.1 mol dm-3 NaOH Given the molecules diethyl ether (CH3CH2OCH2CH3) and 1-butanol (CH3CH2CH2CH2OH), 1-butanol (CH3CH2CH2CH2OH) has the higher boiling point mainly due to hydrogen bonding influences. The unit that provides this link is the mole (mol). #ec_current_media_size{ max-width:1139px; } .ec_product_quickview_content_quantity input[type="submit"]:hover, .ec_product_quickview_content_quantity input[type="button"]:hover, .ec_product_quickview_content_add_to_cart a:hover{ background-color:#666666 !important; } .ec_product_quickview_content_quantity .ec_minus:hover, .ec_product_quickview_content_quantity .ec_plus:hover{ background-color:#666666; } A The molar mass of S2Cl2 is obtained from its molecular mass as follows: The molar mass of S2Cl2 is 135.036 g/mol. molar mass and molecular weight. .ec_category_li{ width:50%; } __C2H2(g) + __O2(g) __ CO2(g) + __ H2O(g), 3.0 dm3 of sulfur dioxide is reacted with 2.0 dm3 of oxygen according to the equation, What will happen to the volume of a fixed mass of gas when its pressure and temperature. .ec_account_order_item_buy_button:hover, .ec_account_order_item_download_button:hover{ background-color:#666666; } B The number of moles of ethylene glycol present in 35.00 g can be calculated by dividing the mass (in grams) by the molar mass (in grams per mole): \( \; 35.00\; g\; ethylene glycol\left ( \frac{1\; mol\; ethylene\; glycol\; (g))}{62.068\; g\; ethylene\; glycol} \right )=0.5639\; mol\; ethylene\; glycol\). In 1 mole of Hydrogen gas, there are 12.0410^23 atoms. " I think it would be good for our entire sales region. ", .ec_cart_input_row > a, .ec_cart_input_row > b, .ec_cart_input_row > strong, .ec_account_order_details_item_display_title > a{ color:#222222; } " I learned many different ways to improve my techniques with current and future customers. ", This site explains how to find molar mass. D. 4.0 dm3, The reaction of ethanal and oxygen can be represented by the unbalanced equation below. What is the mass in grams of 0.42 moles of Al2O3 ? .ec_product_li, li.ec_product_li{ width:50%; } " I would consider this as a necessary course to attend for anyone who is in sales. .ec_newsletter_content input[type='submit']:hover{ background-color:#666666; } How many hydrogen atoms are contained in one mole of ethanol, C2H5OH? .ec_product_type1 .ec_product_quickview > input:hover{ background:#222222; background-color:#222222; } Chemical bonds also hold potential energy. The one and only electron ring around the nucleus of each hydrogen atom has only one electron. The molar mass is an important property in determining the quantity of a substance present in a given sample. #ec_cart_payment_hide_column{ display:none; } box-shadow: none !important; .ec_category_li:nth-child( 2n+1 ) .ec_product_editor{ left:227px; } C. 1.0 mol Na2O $('#widget-tabs').css('display', 'none'); A. Trick question. A mole is defined as the amount of a substance that contains the number of carbon atoms in exactly 12 g of isotopically pure carbon-12. dd, There are 4 Hydrogen atoms in one molecule of methane, or 2 How Did James Hunt Die, in1.25 moles 1.25*6.022*10^23 molecules. How can I know how many moles are in 4.0 grams of Hydrogen gas(H 2)? padding: 0 !important; .ec_product_li:nth-child( 2n+1 ) .ec_product_editor{ left:227px; } .ec_product_type6 .ec_product_meta_type6{ position:relative; width:100%; max-width:100%; margin-left:0; float:none; padding:15px; } .ec_details_swatches > li.ec_selected > img{ border:2px solid #222222; } Linksys Re3000w Price, " I felt like the class was current information, well presented, and interactive. ", .ec_category_li{ width:100%; } /* Very thorough, specific to our needs in a relationship / customer service business. 5.30x1025 hydrogen atoms. First, convert atoms of oxygen to molecules of sulfuric acid. .ec_image_container_none, .ec_image_container_none > div, .ec_image_container_border, .ec_image_container_border > div, .ec_image_container_shadow, .ec_image_container_shadow > div{ min-height:310px; height:310px; } .ec_details_magbox{ display:none; } Transcribed image text: How many atoms are in 2.5 moles of hydrogen? Taco 218 Repair, One mole of oxygen and one mole of hydrogen both contain the The negative charge of the electron is balanced by the positive charge of one proton in the hydrogen nucleus. .ec_product_li:nth-child( 1n+1 ) .ec_product_editor{ left:227px; } B Convert from mass to moles by dividing the mass given by the compounds molar mass. 92% (402 ratings) Problem Details. " Thank you for taking the time to develop a course that will improve the quality of my life. ", Human chorionic gonadotropin is secreted by the granulosa cells of the follicle. .ec_product_li, li.ec_product_li{ width:100%; } .ec_details_right{ padding-left:0px; } Hydrogen molecules. } i.decs_text, " This course not only assists in day to day practices but everyday life. .ec_cart_button_row a.ec_account_login_link:hover{ background:none !important; background-color:transparent !important; color:#666666; } A. .ec_image_container_none, .ec_image_container_none > div, .ec_image_container_border, .ec_image_container_border > div, .ec_image_container_shadow, .ec_image_container_shadow > div{ min-height:310px; height:310px; } Thus, the 1 molecule of CHCl contains 2 hydrogen atoms so for 5 molecules of CHCl there will be 10 hydrogen atoms. } else { (For more information, see Section 1.6 ) Similarly, the molar mass of uranium is 238.03 g/mol, and the molar mass of iodine is 126.90 g/mol. Using the concept of the mole, we can now restate Daltons theory: 1 mol of a compound is formed by combining elements in amounts whose mole ratios are small whole numbers. D. 1 g of CCl4, Assuming complete reaction, what volume of 0.200 mol dm-3 HCl(aq) is required to .ec_cart > thead > tr{ border-bottom-color:#222222; } It should be noted that not all . {color:#292929;text-shadow:none;}.content a, .sidebar a, #footer .box.footer.widget a,.tweet_time a, .box .tweet_text a, .banner .featured_text a, a.read_more,a.more-link{color:#144ca6;}h1,h2,h3,h4,h5,h6, .content h1 a, .content h2 a, .content h3 a, .content h4 a, .content h5 a, .content h6 a C To calculate the number of molecules in the sample, we multiply the number of moles by Avogadros number: \( molecules\; of\; ethylene\; glycol=0.5639\; mol\left ( \dfrac{6.022\times 10^{23}}{1\; mol} \right ) \), For 75.0 g of CCl3F (Freon-11), calculate the number of. B. .ec_category_li:nth-child( 2n+1 ) .ec_product_editor{ left:227px; } CH2Cl2 molecular weight. Very positive and energetic! ", Because each element has a different atomic mass, however, a mole of each element has a different mass, even though it contains the same number of atoms (6.022 1023). The problem for Dalton and other early chemists was to discover the quantitative relationship between the number of atoms in a chemical substance and its mass. The calculated answer (0.5639 mol) is indeed less than 1 mol, so we have probably not made a major error in the calculations. will be (6.022 x 1023 times 2) atoms of hydrogen which will be 2) What is the formula mass of cobalt(II) acetate tetrahydrate? A light year is the distance that light travels in a year. . .blog_list .comment_quote p, " Every aspect of the course was fine tuned and 100% related to what we deal with every day. ", B. each molecule contains 4 atoms of H. so total number 4*1.25*6.022*10^23=3.011*10^24 atoms of H. 3) What is the mass of 5.0 x 10^15 molecules of dicholoromethane (CH2CL2)? If not, there are 2mol Carbon for every mol of C2H5OH. When we talk about CH2Cl2, Carbon is less electronegative than Chlorine atoms. moles How many molecules of Oxygen (O 2) are present in a sample that is 1.83 10-23 moles? C9H24 which contains the largest number of atoms 1.0 mol of CH3COOH 2.0 mol of H2SO4 3.0 mol of NH3 4.0 mol of K2S 5.0 mol of HCl 2.0 mol of H2SO4 if i have.. In this case, the periodic table tells us there is 1g of hydrogen per mole. Answer (1 of 4): (NH4+)2 HPO4[2-] 4 H atoms per NH4+ ion 2 NH4+ ions 8 H atoms total 1 H atom per HPO4[2-] ion +8 H atoms 9 H atoms total In one molecule there are 42 + 1 = 9. This is not much help in the laboratory for the typical chemist who only has a balance to weight out chemicals but needs to know how the number of atoms or molecules. Cyanocobalamin is vitamin B-12, and its outrageous formula is http://commons.wikimedia.org/wiki/File:Man_responds_to_telephone_call.jpg(opens in new window), http://commons.wikimedia.org/wiki/File:Water-3D-balls-A.png(opens in new window), source@https://flexbooks.ck12.org/cbook/ck-12-chemistry-flexbook-2.0/, status page at https://status.libretexts.org, number of \(\ce{C}\) atoms \(= 4.72 \times 10^{24}\), \(1\) mole \(= 6.02 \times 10^{23}\) atoms, \(1\) mole \(= 6.02 \times 10^{23}\) molecules \(\ce{H_2SO_4}\). .ec_details_right{ padding-left:0px; } CH2Cl2 CS2 two of the above a,b,and c. two of the above. .ec_details_right{ padding-left:0px; } Explanation: First, the correct chemical formula of isopropyl alcohol is C3H 7OH and not C3H 7O. This relation is then used to 'convert' a number of H 2 O molecules to grams by the ratio: mass of X molecules of H 2 O / X molecules = mass of a mole of H 2 O molecules / 6.022 x 10 23 molecules. .ec_image_container_none, .ec_image_container_none > div, .ec_image_container_border, .ec_image_container_border > div, .ec_image_container_shadow, .ec_image_container_shadow > div{ min-height:380px; height:380px; } Therefore, in a mole of methane molecules, there are 2.4088 x 1024. quoteRotator = { How many moles of sulfuric acid is the sample? D. 1.0 mol MgO .wpb_animate_when_almost_visible { opacity: 1; }. .ec_product_details_star_on{ border-bottom-color:#222222 !important; color:#222222; border-bottom-color:#222222; } B. I and III only Please be sure you are familiar with the topics discussed in Essential Skills 2 (Section 7.7 "Essential Skills 2") before proceeding to the Numerical Problems. 1 : 1 B. " Gave me the fundamentals and skills I was lacking. ", 16. How about in a dozen? A hydrocarbon contains 90% by mass of carbon. .ec_details_right{ width:53%; margin-left:47%; } ul.ec_menu_vertical ul li a:hover, ul.ec_menu_vertical ul ul li a:hover, .ec_categorywidget a:hover, .ec_manufacturerwidget a:hover, .ec_pricepointwidget a:hover, .ec_groupwidget a:hover, .ec_product_widget_title a:hover{ color:#222222 !important; } 2 The bond angles about the carbon atom in the formaldehyde molecule, H2C=O, are about: 120 degrees The molecular structure of IF4- is square planar T/F a Trigonal pyramid molecules (three identical bonds) always has a dipole moment T When a carbon atom has sp3 hybridization, it has (# of what type of bonds) four bonds .ec_details_add_to_cart_area > .ec_details_quantity > .ec_minus:hover, .ec_details_add_to_cart_area > .ec_details_quantity > .ec_plus:hover, .ec_details_add_to_cart_area > .ec_details_add_to_cart > input:hover, .ec_details_add_to_cart_area > .ec_details_add_to_cart > a:hover, .ec_details_customer_reviews_row > input[type="button"]:hover, .ec_details_inquiry_popup_main > form > .ec_details_add_to_cart > input:hover, .ec_details_inquiry_popup_main > form > .ec_details_add_to_cart > a:hover{ background-color:#666666 !important; } {color:#8f8f8f;}ul.footer_links li What is error code E01-5 on Toyota forklift. One mole is equal to 6.022 x 1023. .ec_details_customer_review_date > strong{ color:#222222; } .ec_categorywidget a:hover, .ec_manufacturer_widget a:hover, .ec_pricepoint_widget a:hover, .ec_group_widget a:hover, .ec_cartwidget a:hover{ color:#666666 !important; } quotesInit: function(){ .ec_product_li:nth-child( 2n+1 ) .ec_product_editor{ left:227px; } .ec_account_dashboard_row_divider a:hover, .ec_account_order_line_column5 a:hover, .ec_account_complete_payment_button:hover{ background:#666666 !important; background-color:#666666 !important; } Which compound has the empirical formula with the greatest mass? .ec_category_li:nth-child( 2n+1 ){ clear:both; } .ec_cart_right{ width:100%; padding-left:0px; } Convert grams CH2Cl2 to moles or moles CH2Cl2 to grams Molecular weight calculation: 12.0107 + 1.00794*2 + 35.453*2 Percent composition by element Calculate the molecular weight of a chemical compound
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