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sergeinik [125]
3 years ago
12

PLS HELP ME I WILL GIVE BRAINLIEST TO U I JUST NEED ANSWERS ASAP

Chemistry
1 answer:
elena55 [62]3 years ago
4 0

Answer:

is this multiple choice just wondering

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How many megagrams are there in 7.020 * 10^-10 nanograms
Ilia_Sergeevich [38]
From the basics conversions:
1 nanogram is equivalent to 1 * 10^-15 megagrams

To convert 7.02 * 10^-10 nanograms to megagrams, all you have to do is cross multiplication as follows:
1 nanogram ................> 1 * 10^-15 megagrams
7.02 * 10^-10 nanograms ...............> ?? megagrams

megagrams = (7.02*10^-10 * 1*10^-15) / (1) = 7.02 * 10^-25 megagrams
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A student wants to do scientific research on how aquatic plants in lakes have changed over time. What field of science does this
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5 0
3 years ago
Answer please correctly
sladkih [1.3K]

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The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the
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Answer: 0.225 atm

Explanation:

For this problem, we have to use Boyle's Law.

Boyle's Law: P₁V₁=P₂V₂

Since we are asked to find P₂, let's manipulate the equation.

P₂=(P₁V₁)/V₂

P_{2} =\frac{(1.00atm)(0.45L)}{2.00L}

With this equation, the liters cancel out and we will be left with atm.

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What are the two most common elements in the entire universe
g100num [7]

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