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weqwewe [10]
3 years ago
5

Texas is 790 miles from east to west. How many feet is that if 1 mile is equal to 5,280

Chemistry
1 answer:
Alex17521 [72]3 years ago
8 0

Answer:

4,171,200\ ft

Explanation:

Remember that

1 mile=5,280 feet

so

using proportion

convert 790 miles to feet

Let

x ---> the number of feet

\frac{1}{5,280}\frac{mi}{ft} =\frac{790}{x}\frac{mi}{ft}\\\\x=5,280*790\\\\x=4,171,200\ ft

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what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

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Percentage composition = 14.583%

3 0
3 years ago
The plants characteristic green color comes from the chemical
frosja888 [35]

Answer:

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Explanation:

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7 0
3 years ago
Natural gas is a mixture of many substances, primarily CH₄, C₂H₆, C3H8, and C4₄H₁₀. assuming that the total pressure of the gase
olchik [2.2K]

Answer:

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Explanation:

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The partial pressure for C4H10 = 0.078 x 1.48 = 0.115atm

7 0
3 years ago
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balandron [24]
Hi!

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6 0
3 years ago
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