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ira [324]
3 years ago
9

Perform the following operation and express the answer in scientific notation. 1.26x104 + 2.50x104 [?]x10​

Chemistry
1 answer:
ss7ja [257]3 years ago
4 0
Since your multiplying by the same number, 104, both terms, you can group them like this:
104(1.26+2.50)
104(3.76)
391.04

Knowing that scientific notation needs to be a number x, that’s greater or equal to 1, and less then 10.
3.9104 * 10^2
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4 0
3 years ago
Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Be sure the equation y
torisob [31]

Answer:

<u>2HClO(aq) + Ba(OH)₂(aq)</u> →  Ba(ClO)₂(aq) + 2H₂O(l)

Explanation:

The reaction corresponds to a neutralization reaction between an acid and a base, as follows:

2HClO(aq) + Ba(OH)₂(aq)  →  Ba(ClO)₂(aq) + 2H₂O(l)            

From the equation above we have that the acid HClO reacts with the base Ba(OH)₂ to obtain a salt Ba(ClO)₂ and water.

In the balanced reaction, we have that 2 moles of HClO react with 1 mol of Ba(OH)₂ to produce 1 mol of Ba(ClO)₂ and 2 moles of water.

I hope it helps you!    

4 0
3 years ago
QUESTION 20 Which of the following is a producer? oak tree raccoon cockroach human
Oduvanchick [21]

Answer:

may be the first one is a producer

8 0
4 years ago
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Suppose you work for a government office that needs to find a suitable place to bury barrels of poisonous liquid wastes. The soi
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Answer:

The correct answer is clay rich soil

Explanation:

because the clay soil has high porosity than sand for example, as the porosity is inversely proportional with the grain size of the sediment . and the more porosity the soil has , the high amount of water that can be hold by it.

so the clay rich soil can hold high amount of water more than any sediment soil    

also the clay rich soil has a low permeability that means it rarely pass the water which it holds through it , because the clay is impermeable rock and the ability to pass liquids through its layer is very hard

So this is the good one

6 0
3 years ago
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A perfume bottle is dropped in the corner of a room. Tge odor of the perfume can be detected on the other side of the room. Whic
Illusion [34]
<h2>Answer:</h2>

The<u> diffusion </u>occurs in room.

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<h3>Explanation:</h3>

Diffusion is a process by which molecules move down their concentration gradient. The process does not require any membrane.

So corner with perfume has high concentration of odor molecules. Hence they move to other corner with low concentration of molecules.

8 0
3 years ago
Read 2 more answers
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