Generate Quiz 6A91DAB45887B

H3PO4 is phosphoric acid. 97.9 g/mol is its molar mass. We utilize the following formula to determine the mass: mass = moles × molar mass mass = 1.69×97.994

= 166 g

16g of oxygen is present in 0.5 moles of CO2.

This is due to the fact that oxygen makes up 32g of the 44g mass of one mole of CO2. Consequently, 16g/32g/mol = 0.5 moles of CO2 contains 16g of oxygen.

The mass of every element present in the products of a chemical reaction must equal the mass of every element present in the reaction on the reactant side, according to the law described in Option C, which states that matter cannot be created or destroyed. This is the right response since it is the foundation for balancing a chemical equation, which is necessary for stoichiometric calculations to be performed.

Eighteen grams of water contain two hydrogen atoms.

Thus, 2 6.022 x 1023 should be the value.

Two * the molar masses of H and O equals the molar mass of H2O.

H’s molar mass is about 1 g/mol.

O’s molecular mass is about 16 g/mol.

2 * 1 g/mol + 16 g/mol ≈ 18 g/mol is the molar mass of H2O.

We can now determine how many moles of water (n) there are in 18 grams:

n = mass / molar mass = 18 g / 18 g/mol = 1 mol

One water molecule contains two hydrogen atoms (H), so for every mole of water, there are two moles of hydrogen atoms.

Two moles of hydrogen are equal to the number of hydrogen atoms. * The number of Avogadro

≈ 2 * 6.022 x 10^23

About 1.2044 x 10^24 hydrogen atoms

There are 14 g of nitrogen and 16 g of oxygen in total. We obtain 2 by dividing the mass of nitrogen in the compound (28g) by 14g. Five is obtained by dividing the mass of oxygen in the compound (80g) by 16g. Thus, we can state that the formula is N2O5 since the molar ratio of N to O is 2:5.

We must compute Jimmy’s hemoglobin count using the provided red blood cell count in order to ascertain whether or not he is anemic.

There are roughly 270 million hemoglobin molecules in one red blood cell.

Thus, the following formula can be used to determine Jimmy’s blood’s total hemoglobin molecule count:

729 x 1018 molecules/uL = 2.7 x 1012 cells/uL x 270 x 106 molecules/cell

This must be divided by a conversion factor of 6.242 x 1014 molecules/g in order to be converted to the standard units of hemoglobin count (g/dL):

11.7 g/dL (829 x 1018 molecules/uL ÷ 6.242 x 1014 molecules/g)

Jimmy is anemic because his hemoglobin count is below the typical adult male level of 13.5 g/dL.

The proportions of the elements that make up a compound are provided by the empirical formula. All of the atoms in a compound must be divided by a common number in order to determine that. For both compounds, only option D provides the same empirical formula. C2O is the result of dividing the number of atoms in C6H12O6 by 6 and CH3COOH by 2. To make it easier to understand, CH3COOH can be written as C2H4O2 and then divided by 2.

Other choices are incorrect since they contain compounds with distinct empirical formulas.

A having H2O & HO,

B containing CH2 and CH,

C containing H2SO4 and H2S2O3.

The number of particles in one mole of a substance is known as Avogadro’s number.

In chemistry, the number of atoms, molecules, or other particles in a substance is measured in moles. It is the quantity of a material that has exactly the same number of atoms, molecules, or other particles as precisely 12 grams of carbon-12.

The approximate value of Avogadro’s number is 6.022140857 × 1023. This indicates that one mole of a substance contains roughly 6.022140857 × 1023 atoms, molecules, or other particles.