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alexdok [17]
3 years ago
5

In what type of reaction or process does heat flow into the system?

Chemistry
1 answer:
Ne4ueva [31]3 years ago
5 0

Answer:

Endothermic

Explanation:

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2A1 +3CL2, → 2AICI3 what is the reaction
DerKrebs [107]

Answer:

redox reaction

Explanation:

8 0
3 years ago
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How many chemicals can u mix that make it dangerous
love history [14]

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Well ammonia and bleach Will kill yoi

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6 0
3 years ago
5. What are the coefficients when the equation below is balanced?
aleksley [76]

Answer:

C.) 2,1,2

Explanation:

You have to balance the equation by getting the number of elements on the left and right side to equal. Before balancing there is one more oxygen on the left side than the right side. You have to change the coefficient in front of H2O to fix this, and that means adding a "2" in front of the H2 to get that to equal as well.

You end up with 2H₂+10₂→ 2H₂O

8 0
2 years ago
3. Ethanol has a density of 0.800 g/mL. <br> a. What is the mass of 225 mL of ethanol?
dedylja [7]

Since the ethanol has a density of 0.800 g/mL, the mass of the ethanol is 180 grams.

<u>Given the following data:</u>

  • Volume of ethanol = 225 mL
  • Density of lead ball = 0.800 g/mL.

To find the mass of the ethanol;

Density can be defined as mass all over the volume of an object.

Mathematically, the density of a substance is given by the formula;

Density = \frac{Mass}{Volume}

Making mass the subject of formula, we have;

Mass = Density \times Volume

Substituting the given parameters into the formula, we have;

<em>Mass of ethanol </em><em>=</em><em> 180 grams.</em>

Read more: brainly.com/question/18320053

3 0
3 years ago
Calculate the volume occupied by 55.5 moles of water at STP.
Tems11 [23]

Answer:

Volume occupied by 55.5 moles of water gas at STP = 1240 Liters.

Explanation:

1st keep in mind that 'volume' in the context of problems like this apply only to the gas phase form of the substance. Water in solid form (ice) or liquid form (liquid water) do not apply. Volume in this case is referred to as 'molar volume' and is a gas occupying 22.4 liters at STP conditions (0°C, 1Atm).

So, if 1 molar volume of water gas (steam) occupies 22.4 Liters at STP, then 55.5 moles of water gas occupies 22.4 Liters/mole x 55.5 moles = 1243.2 Liters, or 1240 Liters (3 sig. figs.).   :-)

4 0
3 years ago
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