4. What is the percent by of oxygen in ethylene glycol, C,H,(OH),? mass The answer is

Q: In preparation of Copper (I) Chloride, the mass of copper is 1.0762. Calculate moles of Copper…

A:

Q: Gadolinium oxide, a colorless powder which absorbs carbon dioxide from the air, contains 86.76 mass…

A:

Q: Analysis of a compound showed that is contained 76.0% fluorine atoms carbon atoms by mass. What is…

A: Given,            A compound contains 76.0% Fluorine atoms by Mass. Therefore, Carbon atoms would be…

Q: Chromium(III) nitrate forms a hydrate that is40.50% water by mass. What is its chemical formula?

A: If 100 % mass of Chromium nitrate is present and 40.50 % is the mass of water. Mass of anhydrous…

Q: The percent copper in an unknown copper compound is 22.00 %. What is the formula weight of the…

A: One mole of a substance is equal to as many entities (atoms , molecules , ions ) as there are number…

Q: This is the chemical formula for diethyl ether: (CH,CH,),O. . Calculate the mass percent of hydrogen…

A: Given :-  chemical formula of diethyl ether = (CH3CH2)2O  To calculate :-  mass percent of Hydrogen…

Q: How many chlorine atoms are in 27 molecules of chloroform, CHCI,?

A: CHCl3 is a polar organic compound and is used as solvent in various organic reactions. It is made up…

Q: For the molecular compound phosphorus pentachloride, what would you multiply "moles of PCI5" by to…

A: To determine the multiplying factor to convert the moles of PCl5 to the number of molecules of PCl5.…

Q: ve moles of sulfur dioxide, SO2, would consist of how many molecule

A: To determine the number of molecules in 5 moles of SO2.

Q: me mole

A: Given equation: NH4CIs⇋NH3g+HCIg

Q: The percent by mass of nitrogen for a compound is found to be 63.7%. Which of the following could be…

A: Given -> Percent by mass of nitrogen = 63.7%

Q: 8 Calculate the number of moles, and molecules in:

A: 8. Number of moles = mass/molar mass  1 mol = 6.022 × 1023 molecules

Q: Ascorbic acid (CH,O,) is also known as Vitamin C. What quantity in molecules of CH,O, does a Vitamin…

A: Given: Mass of C6H8O6 = 1025 mg Or mass of C6H8O6 = 1025 ×10-3 g And we know that the molar mass of…

Q: An oxide of iron is found to be 70% iron by mass, what is the empirical formula for this compound…

A: An oxide of iron is given that has the following mass % compositions: Mass percentage Fe =70 % Mass…

Q: moles o

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Q: the chemical formula for hydrogen, chloride istet. A chemist, measured the amount of hydrogen…

A:

Q: Mass % of N in dinitrogen trioxide

A: The chemical formula of diniteogen trioxide is N2O3. The molar mass of N2O3=[(2×14)+(3×16)] = 76…

Q: Six moles of hydrogen sulfide, H2S, would consist of how many molecule

A: Interpretation -  To determine number of molecule of Six moles of hydrogen sulfide H2S -…

Q: Calculate each of the following:(a) Mass % of I in strontium periodate(b) Mass % of Mn in potassium…

A: The mass percentage of iodine in strontium per-iodate Sr(IO4)2 can be calculated as: Mass % of…

Q: The percent copper in an unknown copper compound is 27.40 %. What is the formula weight of the…

A: Given: % of Cu in compound = 27.40 % Mass of Copper (1 mole) = 63.546 amu

Q: Which molecule has the highest percent by mass of hydrogen?

A:

Q: One of the salts that scientists have found on Mars that supports the idea that water once flowed on…

A: The mass percent of an element in a compound is given by the formula  mass percent = mass of element…

Q: 10. Calculate the mass of one mole of glucose (C,H,,O).

A: Given that , Substance = glucose (C6H12O6) moles = 1 mol Now we know molar mass of glucose=…

Q: Use the moles of carbonate ion, CO,²-, to determine the moles of MgCO, and CaCO, present in the…

A: Part 1 :  a.) As in limestone there are both CaCO3 and MgCO3 . So CO32- will come from both CaCO3…

Q: A compound of found to contain 37.47% carbon, 12.61% hydrogen, and 49.92% oxygen by mass. What is…

A: the empirical formula for this compound = CH4O

Q: moles

A: Mole = mass (gm) / molar mass (gm) We find grams = ? Grams = moles × molar mass             = 0.05 ×…

Q: How many moles of acetate ions are pre your answer to four significant figures.

A: 1. number of moles can be calculate by  Number of moles (n) = Given mass/ molecular mass    2.…

Q: An oxide of iron is 69.94% iron by mass; the rest is oxygen. Determine the empirical formula of this…

A: Given : Mass percent of iron = 69.94 %  And the compound contains only iron and oxygen. Since mass…

Q: - of gasoline is öčt moles of carbon

A:

Q: Which of the following is a valid conversion factor to use when converting between atoms and moles?

A:

Q: looking for a small, whole-number ratio between the num bers of moles of the zinc and chlorine, we…

A: From given datas  With the mass % formula, both mass of platinum and chlorine is calculated as…

Q: Make a Venn Diagram on empirical and molecular formulas.

A: Empirical formulas are defined by the exact ratio of atoms of different elements in a compound…

Q: my moles of

A:

Q: The number of particles in 1 mole is called ? b) The value of the mole is equal to the number of…

A: No of particles = mole × avagadro number.   Mass = molar mass × mole.

Q: the moles

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: what mass of sodium hydroxide has the same number of oxygen atoms as 130g of barium dihydrogen…

A:

Q: Calculate each of the following:(a) Mass % of H in ammonium bicarbonate(b) Mass % of O in sodium…

A: The molar mass of ammonium bicarbonate (NH4HCO3) is 79.0553 g/mol. The molar mass of hydrogen atom…

Q: How many aluminum atoms are in 841.555 g of Al203 ? Answer in units of atoms.

A: Mass of aluminum oxide is 841.555 g. Molar mass of aluminum oxide is 101.96 g/mol.

Q: A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent…

A: Use mass percent formula.

Q: COlumn s the mass of this

A: Given as, T=30oC Now, T=30+273T=303ok

Q: This is the chemical formula for acetone: (CH,),CO. Calculate the mass percent of hydrogen in…

A: The mass percent of an element is given as follows; Mass percent=mass of elementMass of compound×100

Q: Need help determining the number of moles in the following problem

A: Given the mass of Ag(silver) =45.2 gramwe are asked to calculate the number of moles of Ag(silver)…

Q: How many moles of nitrogen dioxide, , are present in a sample that contains 4.15 moles of oxygen…

A: Nitrogen dioxide has the formula NO2. It contains one mole of N atom and two mole of oxygen atoms.

Q: In a lab, a grade 11 chemistry student measured 0.30g of solid magnesium metal. The student proceeds…

A:

Q: What mass of sulfur hexafluoride, SF, has the same number of fluorine atoms as 25.0 g of oxygen…

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Q: Example: One mole of the over of Copper is malachite a bright green mineral which has the Simplest…

A: From a particular molecular formula we can calculate the % of the particular atom .

Q: how do you find a mole of a compund? for example water

A: The number of moles of a compound can be found out from the mass of the given compound and its molar…

Q: What is the percent by mass of H in cyclopentane (C5H10)? The molecular weight of carbon is 12.0107…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.