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jenyasd209 [6]
3 years ago
15

True or False?

Chemistry
2 answers:
Iteru [2.4K]3 years ago
4 0
This is true, " To increase acceleration of an object, you reduce its MASS or increase the applied force."
kvv77 [185]3 years ago
3 0
It is true hope it helps
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135-g sample of a metal requires 2.50 kJ to change its temperature from 19.5 C to 100.0 C what is the specific heat of this meta
Harman [31]
The temperature increase is from 19.5 to 100 degrees centigrade or 80.5 degrees centigrade. The calorie increase is 2.50 x 1000 x 0.238902957619 or a total of 597.25 calories. 597.25/80.5 = 7.419 calories per degree centigrade. 7.419/135 grams = 0.0549 calories/gram/degree centigrade. The conversion from kilo joules involves multiplying the calories per joule x 1000 to get the number of calories in one kilo joule and then by the 2.5. 
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What is the least polar solvent /solvent system used to run the tlc?
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What is the volume of 2.5 moles of nitrogen gas (N2)<br>at standard temperature and pressure (STP)?​
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Answer:

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Explanation:

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8 0
3 years ago
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The
hoa [83]
HA ⇄ H⁺ + A⁻ 
so:
\frac{[H^+][A^-]}{[HA]} = 1.5 x 10^{-5}
and now:
\frac{(x)(x)}{(0.150-x)} = 1.5 x 10⁻⁵
x is considered very small compared to 0.15
x² = 2.25 x 10⁻⁶
x = 1.5 x 10⁻³
So [H⁺] = 1.5 x 10⁻³
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7 0
3 years ago
What is the difference between an atom and an element?
Travka [436]

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