If two balls have the same volume, but ball A has twice as much mass as ball B, which one will have the greater

Chemistry

2 answers:

agasfer [191]2 years ago

8 1

Answer:A. D. Y.

Explanation:

Disjsjjsdd

2 years ago

Ur dumb

Serggg [28]2 years ago

3 0

Answer: 1. ball A 2. their densities are equal 3. ball q 4. ball y

Explanation:

just took the test for them all right

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Which of the following why use approximately represent the number of atoms in one mole of gold

natka813 [3]

Answer is: D. 6.02 x 1023.
Because this is Avogadro constant (the number of constituent particles, in this example atoms of gold that are contained in the amount of substance given by one mole). The mole is the unit of measurement for amount of substance, the mole is an SI base unit, with the unit symbol mol.

6 0

2 years ago

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Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas

Zinaida [17]

Answer: Number of molecules of hydrogen gas $6.32\times 10^{32}$

Explanation:

$2Na+2H_2O\rightarrow 2NaOH+H_2$

Number of moles of sodium = $\frac{\text{mass of sodium}}{\text{molar mass of sodium}}=\frac{48.7 g}{23 g/mol}=2.11mol$

According to reaction , 2 moles of sodium produces 1 mole of hydrogen gas , then 2.11 mol of sodium will= $\frac{1}{2}\times 2.11 mol$ of hydrogen gas that is 1.05 moles of hydrogen gas.