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9966 [12]
3 years ago
7

The mass of an atom may be found by adding the

Chemistry
1 answer:
Darina [25.2K]3 years ago
5 0

Answer:

protons and neutrons

Explanation:

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Which of the following
Leokris [45]

A. Acids and bases don't react with each other.  --> False.  Acids and bases react in reactions called neutralization reactions, whose products are salt and water.

B. Acids mixed with bases neutralize each other.  --> True.  See above.

C. Acids mixed with bases make stronger bases.  --> False.  Acids and bases react to neutralize each other, so they would weaken each other, not result in a stronger base or a stronger acid.

D. Acids mixed with bases make stronger acids.  --> False.  See above.

<h3>Answer:</h3>

B. Acids mixed with bases neutralize each other

7 0
3 years ago
For the second-order reaction below, the rate constant of the reaction is 9.4 x 10^-3 M^-1 s^-1. How long (in sec) is required t
Archy [21]

Answer : The time taken by the reaction is 2.2\times 10^2s

Explanation :

The expression used for second order kinetics is:

kt=\frac{1}{[A_t]}-\frac{1}{[A_o]}

where,

k = rate constant = 9.4\times 10^{-3}M^{-1}s^{-1}

t = time = ?

[A_t] = final concentration = 0.40 M

[A_o] = initial concentration = 2.16 M

Now put all the given values in the above expression, we get:

(9.4\times 10^{-3})\times t=\frac{1}{0.40}-\frac{1}{2.16}

t=216.706s\aprrox 2.2\times 10^2s

Therefore, the time taken by the reaction is 2.2\times 10^2s

7 0
4 years ago
Why water wet glass​
Georgia [21]

Answer:

because water wets stuff expect for fire.

4 0
3 years ago
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Write a balanced chemical equation for the reaction of gaseous nitrogen dioxide with hydrogen gas to form gaseous ammonia and li
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3 years ago
Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. Which equation should you use? P equals StartFrac
choli [55]

Answer:

0.056 moles air

Explanation:

P·V = n·R·T => n = P·V/R·T

P = 750 Torr = 750 mmHg = (750mm/760mm/atm) = 0.9868 Atm

V = 1.35 Liters

R = 0.08206 L·atm/mole·K

T = 17°C = (17 + 273) K = 290K

n = (0.9868atm)(1.35L)/(0.08206L·atm/mole·K)(290K) = 0.056 moles air

5 0
3 years ago
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