A compound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass. Part A How many grams of C and H are there in a 250.0 g sample of this substance? Express your answers using one decimal place separated by a comma.

Q: How many moles (of molecules or formula units) are in each sample? 20.0 kg Fe (NO3) 2 Express your…

A: Given , mass of Fe(NO3)2 = 20.0 Kg = 20,000g Molar mass of Fe(NO3)2 = 179.85 g/mol To find the…

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: sample of the unknown compound was placed in a weighed drying pan and heated to give the data below.…

A: Given that the experimental data:   Mass of the drying pan m1= 1.445 g Mass of drying pan and…

Q: If 41.2 g of molten iron(II) oxide reacts with of 20.0 g of magnesium, what is the mass of iron…

A: Given, mass of FeO = 41.2 g Mass of Mg = 20.0 g  Molar mass of FeO = 71.84 g/mol Molar mass of Fe =…

Q: grams of sa

A:

Q: How many moles of NO2 are in 3.1x1025 molecules of NO2? Round your answer to 1 decimal place. Your…

A: Introduction :  The mole is a fundamental (SI) unit used to measure the amount of substances.It is…

Q: How many moles of NO2 are in 8.2x1025 molecules of NO2? Round your answer to 1 decimal place. Your…

A: According to the mole concept, there are 6.022 × 1023 molecules present in 1 mole of every…

Q: Ascorbic acid ( vitamin C)  molar mass 176g/mol   A healthy adult's daily requirement is 70-90 mg a…

A: The daily requirement of vitamin C for a healthy adult's  is = 70-90 mg The molar mass of vitamin C…

Q: How many moles are in 239 g of iron?

A: Given :- mass of iron = 239 g  To calculate :- number of moles of iron

Q: How many grams O in 221.8 g Fe(OH)g? Molar mass of Fe(OH)g is 106.867 Hint: 1 mole Fe(OH)3 has 3 mol…

A:

Q: The chemical formula for diethyl ether is: (CH, CH,),0 Calculate the molar mass of diethyl ether.…

A: Chemical formula of diethyl ether: (CH3CH2)2O Molar mass of C = 12.0g/mol Molar mass of O =…

Q: Calculate the mass percent composition of nitrogen in CO(NH2)2. Express your answer using four…

A: The percent composition of a component present in the mixture is calculated by dividing the mass of…

Q: 2. A compound composed of carbon and hydrogen with the formula CxHy was burned. The balanced…

A: • Since, in the given chemical equation we have to calculate the number of carbon and hydrogen in…

Q: If you have a total of 5.2 grams of a mixture and 2.0 grams of that mixture is determined to be…

A:

Q: A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of…

A: Given : mass of Nitrogen i.e N = 30.4 g And mass of Oxygen i.e O = 69.6 g

Q: This is the chemical formula for cassiterite (tin ore): SnO2 A geochemist has determined by…

A: Given : The formula of cassiterite is SnO2. And the moles of tin i.e Sn in the cassiterite sample =…

Q: How many moles of NO, are in 9.1x1024 molecules of NO2? Round your answer to 1 decimal place. Your…

A: The number of molecules = 9.1 × 1024

Q: Be sure to answer all parts. How many H atoms are in 77.3 g of isopropanol (rubbing alcohol), C3H3O?…

A: We have to calculate  the number  of H atoms present  in 77.3 g of isopropanol alchol ( C3H8O)

Q: You are given a sample that contains a mixture of the following two arsenic-containing minerals:…

A: Metals and non metals are present in nature in their minerals. They are extracted from these…

Q: A particular recipe calls for 342 grams of sucrose (C12H22011). How many moles of sucrose are in…

A:

Q: How many moles of tin atoms are in a pure tin cup with a mass of 31.7 g ? Express your answer in…

A: Molar mass of tin=118.71g/mol Given mass of tin=31.7g No. Of moles= given mass/molar mass…

Q: The chemical formula for diethyl amine is: (CH,CH,), NH Calculate the molar mass of diethyl amine.…

A: mass of C= 12.01 g/mol mass of H= 1.00794 g/mol mass of N= 14.0067 g/mol

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,O;),(OH), An…

A:

Q: The chemical formula for diethyl sulfoxide is: (CH,CH,), SO Calculate the molar mass of diethyl…

A:

Q: How many C atoms are present in 8.94 · 1020 CH3C(O)H molecules? Express your answer in scientific…

A: Scientific notation is way to express the numbers that are too big or small to be written…

Q: The black powder used to propel a firework into the sky is made up of 64% by mass potassium nitrate…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: A certain organic compound has the formula C8H12O2. A sample of this compound weighs 1.05 grams.…

A: To determine number of atoms of hydrogen in sample We need to calculate moles of sample present .…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: Given : Chemical formula of acetic acid = CH3COOH  And moles of carbon in acetic acid sample = 42…

Q: The chemical formula for diethyl amine is: (CH,CH,), NH Calculate the molar mass of diethyl amine.…

A: Atomic mass of carbon : 12.0107 u  Atomic mass of Hydrogen : 1.007844 u  Atomic mass of Nitrogen :…

Q: The chemical formula for diethyl ether is: (CH,CH,),0 Calculate the molar mass of diethyl ether.…

A: Molecular mass is defined as sum of molar masses of atoms present in that molecule.

Q: High fructose corn syrup (HFCS) is a sweetener that was designed in the 1970s, which takes corn…

A: Given, Amount of HFCS used = 67.5 g Percentage of fructose molecules =55.1 % Percentage of glucose…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A:

Q: Part C: 5. Find the amount (moles) of the substance in the following samples to two decimal places:…

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Q: If we assume the mass of a large egg is 55 g of which 2.7 g is egg whites and ovomucin make up 2 %.…

A:

Q: %. The percent by mass of bromine in PNBR2 is (Enter your answer to four significant figures.)

A:

Q: What is the percentage of potassium in a 10 g sample of potassium sulfate? Report your answer to the…

A:

Q: 1. Vitamin C has the formula C,H,Og. Calculate the number of vitamin C molecules present in a 0.250…

A: 2.) We are having 0.1 g of caffeine (C8H10N4O2) Molar mass of caffeine  = 194.2 g/mol

Q: 1.75 x 1023 atoms Pb converted to grams

A:

Q: Be sure to answer all parts. How many H atoms are in 40.1 g of isopropanol (rubbing alcohol), C3H§O?…

A: H - atoms in 40.1 g of isopropanol=?

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.…

A: Solution:-  Mass of Cl2 is 35.5+35.5=71 gm

Q: During the experiment, a student calculated the mass of chlorine in the compound to be 1.153 g. How…

A:

Q: mass

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Q: Part B If you had excess aluminum, how many moles of aluminum chloride could be produced from 36.0 g…

A: The reaction taking place is  2 Al + 3 Cl2 -------> 2 AlCl3

Q: Part A: How many atoms of hydrogen does it contain?         Express your answer using four…

A: Given: Number of carbon atoms in C6H12O6 = 1.300 × 1021 atoms.

Q: Which of the following contains the greatest number of molecules? A. 1 g of CH3CI В. 1 g of CH,Cl2…

A:

Q: This is the chemical formula for taic (the main ingredient in talcum powder): Mg,(Si,0,), (OH), An…

A: Chemical Formula of talc = Mg3(Si2O5)2(OH)2 Number of oxygen atom in one molecule of talc = 5×2 + 2…

Q: Use the References to access important values if needed for this question. a. How many ATOMS of…

A: A mole is defined as the number of particles or constituents present in exactly 12g of carbon-12…

Q: 4. A sample of acetic acid has 4.22x1024 molecules. How many grams of hydrogen are present?

A:

Q: Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below.…

A: The formula of the above mentioned organic molecule is : C18H34O2

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.