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sukhopar [10]
3 years ago
11

10 points

Chemistry
2 answers:
katrin [286]3 years ago
6 0
A. All organism are made up of cell.. I think:)
zepelin [54]3 years ago
3 0

Answer:

A all organisms are made of 1 or more cells

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How many moles are in 264 g of gold, Au?<br>1 point<br>​
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Answer: 1/2

Explanation:

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3 years ago
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The density of quartz mineral was determined by adding a weighed piece to a graduated cylinder containing 50.3 mL water. After t
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<u>Answer:</u> The density of the quartz is 2.68 g/mL

<u>Explanation:</u>

We are given:

Volume of graduated cylinder = 50.3 mL

Volume of quartz + graduated cylinder = 64.8 mL

Volume of quartz = [64.8 - 50.3] mL = 14.5 mL

To calculate the density of substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

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\text{Density of quartz}=\frac{38.9g}{14.5mL}\\\\\text{Density of quartz}=2.68g/mL

Hence, the density of the quartz is 2.68 g/mL

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3 years ago
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a helium filled balloon has a volume of 208 l and it contains 9.95 moles of gas. if the pressure of the balloon is 1.26 atm dete
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To determine the temperature of the gas, we need to assume ideal gas to use the equation PV=nRT where P represents the pressure, V is the volume, n is the number of moles, T is the temperature and R is the universal gas constant. We calculate as follows:

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T = (1.26 atm) ( 208 L ) / 0.08205 L-atm/mol-K ( 9.95 mol )
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Hope this answers the question.
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4 years ago
If liquid water is exposed to normal atmospheric pressure, what needs to change in order to change its state of matter?
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Mass of water because then it will change his States of matter
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