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3 years ago

9

Investigating a fire scene, Investigator Smith determines several places where fires started. What might this indicate about the

cause of the fire? A) it was an electrical fire B) it was deliberately set C) an accelerant was used D) It was an accident

1 answer:

grigory [225]3 years ago

3 0

Answer:

an accelerant was used because maybe some was spilt and therefore leaving a smell and evidence

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What is the chemical formula for acetic acid?

liberstina [14]

CH3COOH

Explanation:

hope I helped

if you get the answer right mark me as brainlyst

8 0

2 years ago

_Mg+_O2=_MgO<br> Balance out this reaction above

Ira Lisetskai [31]

2 Mg + 1 O2 = 2 MgO.

8 0

3 years ago

Fritz-Haber process

maks197457 [2]

Answer:

5×10⁵ L of ammonia (NH3)

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

N2 + 3H2 —> 2NH3

From the balanced equation above, we can say that:

3 L of H2 reacted to produce 2 L of NH3.

Finally, we shall determine the volume of ammonia (NH3) produced by the reaction of 7.5×10⁵ L of H2. This can be obtained as illustrated below:

From the balanced equation above,

3 L of H2 reacted to produce 2 L of NH3.

Therefore, 7.5×10⁵ L of H2 will react to produce = (7.5×10⁵ × 2)/3 = 5×10⁵ L of NH3.

Thus, 5×10⁵ L of ammonia (NH3) is produced from the reaction.

6 0

3 years ago

A 3.93 g sample of a laboratory solution contains 1.25 g of acid. what is the concentration of the solution as a mass percentage

WITCHER [35]

Divide 1.25/3.93 and then multiply by 100 to get the percent. This equals 31.81%

4 0

3 years ago

Which has a greater volume, 10 grams of water or 10 grams of acetone?

WINSTONCH [101]

Density is defined as the ratio of mass to the volume.

Density = $\frac{Mass}{Volume}$ (1)

Mass of water = 10 grams

Mass of acetone = 10 grams

Density of water = 1 $\frac{g}{cm^{3}}$

Density of acetone = 0.7857 $\frac{g}{cm^{3}}$

Put the value of density of water and its mass in equation (1)

1 $\frac{g}{cm^{3}}$ = $\frac{10 g}{volume}$

Volume of water = 10 $cm^{3}$

Put the value of density of acetone and its mass in equation (1)

0.7857 $\frac{g}{cm^{3}}$ = $\frac{10 g}{volume}$

Volume of acetone = 12.72 $cm^{3}$

Thus, volume of acetone is more than volume of water because the density of acetone is lower.

6 0

3 years ago