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koban [17]
4 years ago
9

Each of the jars was heated 90°C each jar was placed on the counter and allowed to cool

Chemistry
1 answer:
jeka944 years ago
8 0
Where is the rest of the question?
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The balance reads 221.5 _________ and is measuring an object's _____________. grams; mass Newton's; mass kilograms; mass Newton'
azamat

Answer: grams;mass

Explanation: :)  I took the test.

5 0
2 years ago
When do electrons release photons​
Inessa05 [86]

Answer:

Later when they are older

Explanation:

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3 0
3 years ago
A 50.0 mL sample of 12.0 M HCl is diluted to 200 mL. What is true about the diluted solution?
kobusy [5.1K]

The concentration of the solution reduces and the number of moles of solute isn't affected.

Data;

  • V1 = 50mL
  • C1 = 12.0M
  • V2 = 200mL
  • C2 = ?
<h3>Facts about the diluted solution</h3>

1. When the solution is diluted, the concentration changes and this time, the concentration reduces.

Using dilution formula

c_1 v_1 = c_2 v_2\\12 * 50 = c_2 * 200\\c_2 = \frac{600}{200} \\c_2 = 3M

The concentration of the solution reduces.

2. The number of moles remains the same.

When a solution is diluted, the number of moles remains the same because there's no change in the mass of the solute.

Learn more on concentration of a solution here;

brainly.com/question/2201903

7 0
3 years ago
My answer was 10 and it’s telling me it’s wrong..what did i do wrong?
Keith_Richards [23]

Answer:

1.586x10^-9

Explanation:

To make a multiplication in scientific notation we need to multiply the coefficients and sum the exponents:

Coefficients: 2.600 * 6.1000 = 15.86

Exponents: -5 + (-5) = -10

The result is:

15.86x10^-10

As the scientific notation must be given with only 1 number in the left of the point:

<h3>1.586x10^-9</h3>

5 0
3 years ago
A new material formed in a chemical reaction is called a?
fredd [130]
Products


Chemical reactions are characterized by the formation of new products, and the making and breaking of strong chemical bonds.
7 0
3 years ago
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