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Yanka [14]
3 years ago
8

What is a solid formed from liquid reactions during a chemical reaction

Chemistry
1 answer:
kherson [118]3 years ago
5 0
Cat urine. May sound weird, may get it wrong, but it's true. Your teacher'll freak out.
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Which MOST CLOSELY identifies a theme in this passage?
Delicious77 [7]

Answer:

B)

Explanation:

It is the theme of the passage.

8 0
3 years ago
Nail polish remover containing acetone was spilled in a room 7.2 m × 5.8 m × 3.9 m. Measurements indicated that 6,400 mg of acet
sergeinik [125]

Volume of room  = 7.2 m \times 5.8 m \times  3.9 m

= 162.864 m^{3}

Now, according to conversion factor, convert 6,400 mg to micrograms

Since, 1 mg is equal to 1000 microgram.

Therefore, 6,400 mg  = 6,400 \times 1000

= 6,400,000 micrograms of acetone.

To calculate concentration of acetone, divide volume and evaporated amount of acetone in micrograms.

Thus,

Concentration of acetone  = \frac{6,400,000 microgram}{162.864 m^{3}}

= 39296.5910 microgram per cubic meter or 3.92\times 10^{4} \mu g/m^{3}\simeq 4.0\times 10^{4} \mu g/m^{3}

Hence, concentration of acetone is equal to 4.0\times 10^{4} \mu g/m^{3}

7 0
2 years ago
PLS
MrRissso [65]

Answer:

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

8 0
2 years ago
Calculate the density of a box with a mass of 500 g and the following
Sedaia [141]

Answer:

25/12 or about 2.083g/cm^3

Explanation:

The first step is to find the volume of the box. The formula for the volume of a rectangular prism is width*height*length, which in this case is 8*6*5=240 cubic centimeters. The formula for calculating density is mass/volume, which in this case is 500/240=25/12 or about 2.083 g/ cubic centimeter. Hope this helps!

7 0
3 years ago
Read 2 more answers
The temperature of a sample of water increases from 20.9°C to 45.5°C as it absorbs 5637 J of heat. What is the mass of the sampl
djyliett [7]
Q = 5637 J

 C =4.814 J/KgºC

Temperature  : 45.5ºC - 20.9º C = 24.6ºC

Q = m x C  x T

5637 = m x 4.814 x 24.6

5637 = m x 118.4244

m = 5637 / 118.4244

m = 47.60 g

hope this helps!
4 0
3 years ago
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