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2 years ago

Petrified fossils are really

Chemistry

1 answer:

Anna35 [415]2 years ago

3 0

I think it would be either dead bodies or rocks? i dont really understand too well but sorry if this doesn’t help!! :((

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If an atom contains more <br> electrons than protons, it is

Ray Of Light [21]

Answer:

If an atom has the same number of electrons as protons, it is a neutral atom.

Explanation:

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3 years ago

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3 years ago

A laboratory analysis of a 100 g sample finds it is composed of 1.8 g hydrogen, 56.1 g sulfur, and 42.1 g oxygen. What is its em

Neporo4naja [7]

Answer: The empirical formula is $H_2S_2O_3$

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mas of H = 1.8 g

Mass of S = 56.1 g

Mass of O = 42.1 g

Step 1 : convert given masses into moles.

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{1.8g}{1g/mole}=1.8moles$

Mass of S = $\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{56.1g}{32g/mole}=1.8moles$

Moles of O= $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{42.1g}{16g/mole}=2.6moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For H = $\frac{1.8}{1.8}=1$

For S = $\frac{1.8}{1.8}=1$

For O = $\frac{2.6}{1.8}=1.5$

Converting to whole number ratios

The ratio of H: S: O= 2: 2: 3

Hence the empirical formula is $H_2S_2O_3$

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3 years ago

a pot is filled with soup. the soup at the bottom of the pot is warmed by the stove burner, but how does the soup at the top get

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4 years ago

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I would say a Think Tank would be the best creative process to help engineers generate ideas. Think Tanks are groups of people that help generate ideas to solve problems and grow companies.

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3 years ago