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weqwewe [10]
2 years ago
11

True or false. (Pls help)

Chemistry
2 answers:
NNADVOKAT [17]2 years ago
6 0

Answer:

1.) False?

2.) true. sorry english not my first language

grigory [225]2 years ago
5 0
I believe they’re both true.
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Can somebody give me a example of a mixture?
exis [7]

I believe when you mix two things up together. It is called mixture. And they make one Compound. One example could be water, sugar, and flavorings making one compound which is soda. Hope it helps.

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3 years ago
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An unknown amount of sodium azide (NaN3) reacts and produces 0.033 moles of nitrogen gas. What mass of sodium metal is produced
Monica [59]

Answer:

Mass of sodium metal is 130.87 gram

Explanation:

The complete reaction is

2 NaN3 --> 2 Na + 3 N2

We know that PV = nRT

n = \frac{PV}{RT}

On substituting the given values, we get

n = \frac{\frac{99707}{101325}*75 }{0.082 *(273.15 +15)} \\n = 3.02moles of N2

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3 years ago
What is the linkage that binds one monosaccharide to another?
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Answer:

hope this helps

Explanation:

glycosidic bond

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3 years ago
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A student states that an exothermic chemical reaction can transfer its heat only by convection and conduction. Which disproves t
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b is the right answer

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3 years ago
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A fossil was analyzed and determined to have a carbon-14 level that is 70 % that of living organisms. The half-life of C-14 is 5
Citrus2011 [14]

Answer: 2948

Explanation:

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t_{\frac{1}{2}}=\frac{0.693}{k}

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Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

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a = let initial amount of the reactant  = 100

a - x = amount left after decay process = \frac{70}{100}\times 100=70

t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{70}

t=2948years

Thus the fossil is 2948 years old.

5 0
3 years ago
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