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zhannawk [14.2K]
2 years ago
13

What effect does temperature have on reaction rate?

Chemistry
1 answer:
barxatty [35]2 years ago
7 0
The answer for this multiple choice question is C



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Which of the following best describes regolith?
almond37 [142]
A. <span>the layer of rock and mineral fragments that covers nearly all of Earth's land surface</span>
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3 years ago
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Describe the scale used to measure the basicity of a substance. Demonstrate how you could differentiate a weak base from a stron
Verizon [17]

Answer:

Basicity is measured on a scale called the pH scale. On this scale, a pH value of 7 is neutral, and a pH value of more than 7 to 14 shows increasing basicity.

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3 years ago
Calculate the number of moles of iodine in 7.68×10^25 molecules of I2
Dmitrij [34]

Answer:

<h2>127.57 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{7.68 \times  {10}^{25} }{6.02 \times  {10}^{23} }   \\  = 127.574750...

We have the final answer as

<h3>127.57 moles</h3>

Hope this helps you

4 0
2 years ago
If 24k gold is the highest purity (100%), then a 6 Karat piece of gold jewelry would contain what percentage of gold?
krok68 [10]

Answer:

25% gold.

Explanation:

6 is 25 percent of 24, so 6 karat gold would be 25% gold.

4 0
3 years ago
Write the balanced chemical equations of the following reaction: Hydrogen and oxygen react to form water.
timofeeve [1]
H2 + O = H2O
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