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notka56 [123]
3 years ago
12

How is the reaction rate affected by a temperature decrease?​

Chemistry
1 answer:
emmasim [6.3K]3 years ago
8 0

Answer: When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. ... That greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other.

Explanation: i hoped that helped!!!!!!!

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What is the coefficient for oxygen in the balanced equation? C 5H 12 + ? O2 → ? CO2 + ? H2O. 2 4 5 6 8
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Answer:

8

Explanation:

When you balance the entire equation, you should get:

C5H12 + 8O2 ---> 5CO2 + 6H2O

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How many milliliters of sodium metal, with a density of 0.97 g/mL, would be needed to produce 43.6 grams of sodium hydroxide in
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Answer is: 25.84  milliliters of sodium metal.

Balanced chemical reaction: 2Na + 2H₂O → 2NaOH + H₂.

d(Na) = 0.97 g/mL; density of sodim.

m(NaOH) = 43.6 g; mass of sodium hydroxide.

n(NaOH) = m(NaOH) ÷ M(NaOH).

n(NaOH) = 43.6 g ÷ 40 g/mol.

n(NaOH) =1.09 mol; amount of sodium hydroxide.

From chemical reaction: n(NaOH) : n(Na) = 2 : 2 (1: 1).

n(Na) = 1.09 mol.

m(Na) = 1.09 mol · 23 g/mol.

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7 0
3 years ago
What is the new volume of a sample of neon if 5.23 L of the gas, which was originally at 214 mmHg, is compressed until the press
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A copper rod that has a mass of 200.0 g has an initial temperature of 20.0°C and is heated to 40.0°C. If 1,540 J of heat are nee
almond37 [142]

Answer:

Specific heat of copper = 0.385 J/(gi°C)

Explanation:

Given:

Mass of copper (m) = 200 g =

Initial temperature (T1) = 20°C

Final temperature (T2) = 40°C

Heat needed (Q) = 1,540 J

Find:

Specific heat of copper = ?

Computation:

⇒ Change in temperature (ΔT) = T2 - T1

⇒ Change in temperature (ΔT) = 40°C - 20°C

⇒ Change in temperature (ΔT) = 20°C

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Specific heat of copper = 0.385 J/(gi°C)

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3 years ago
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