1 year ago

How are elemnts different than atoms

Chemistry

1 answer:

Oduvanchick [21]1 year ago

3 0

Answer:

Explanation:

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If 25.8 grams of BaO dissolve in enough water to make a 212-gram solution, what is the percent by mass of the solution?

Igoryamba

The correct answer is 12.2% BaO.

The solution is found by dividing the mass of the BaO, which is 25.8 grams, by the total mass of the solution, which is 212 grams, then multiplying it by 100 to get the percentage:
$\frac{25.8}{212}*(100) =12.2%$

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2 years ago

N2 + 3H2 = 2NH3

My name is Ann [436]

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What do you call a large body of air?<br> wind<br> thunderstorm<br> cold front<br> air mass

Keith_Richards [23]

Answer:

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Explanation:

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1 year ago

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How many moles are in 9.50 x 1022 molecules of CO? Be sure to ALL work below and report your answer using the correct number of

eimsori [14]

Answer:

0.158 moles

Explanation:

We are given;

9.50 x 10^22 molecules of CO

We are required to determine the number of moles;

We need to know;

1 mole of a compound = 6.022 × 10^23 molecules

Therefore;

9.50 x 10^22 molecules of CO will be equivalent to;

= 9.50 x 10^22 molecules ÷ 6.022 × 10^23 molecules/mole

= 0.158 moles

Therefore, the number of moles are 0.158 moles

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3 years ago

An unknown element, X, reacts with sodium to form the compound Na2X. In other compounds, this element also can accommodate up to

Andreas93 [3]

Answer:

B. O

Explanation:

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2 years ago