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Charra [1.4K]
3 years ago
7

Joel has noticed that his engine is not compressing properly during the compression and ignition step. What problem will this po

se?
Chemistry
1 answer:
denis-greek [22]3 years ago
7 0

The answer is: The engine will run inefficiently APEX....

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Which of the following models represents an atom that is more reactive than the
Zanzabum

Answer:

Model A

Explanation:

Model A represents an atom that is more reactive than the others represented.

Valence electrons actually determine the reactivity of elements. They also determine the properties of elements.

Elements with one valence electron are highly reactive because they need low energy to remove them. They can either gain more electrons to become stable or they share/give out their electrons.

Therefore, Model A is the correct answer because it has one valence electron and its valence electron is farther from the nucleus thereby this makes it more reactive.

8 0
3 years ago
3. Round 87.073 meters to three significant figures. Write your answer in scientific notation. Step 1: 87.073 rounds to _______
Nat2105 [25]

Answer:

see below

Explanation:

3.  87.073 meters to three significant figures.

  = 87.1 meters

2.  Write the number in scientific notation. _____meters​

   = 8.71 x 10 ¹  meters

6 0
3 years ago
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Carboxyhemoglobin may be formed when a person inhales air that contains
elena-14-01-66 [18.8K]
Answer is none of the above
5 0
3 years ago
A solution is prepared by dissolving 15.0 g of nh3 in 250.0 g of water. the density of the resulting solution is 0.974 g/ml. the
sergeinik [125]
The formula for molality---> m = moles solute/ Kg of solvent

the solute here is NH₃ because it's the one with less amount. which makes water the solvent.

1) let's convert the grams of NH₃ to moles using the molar mass

molar mass of NH₃= 14.0 + (3 x 1.01)= 17.03 g/ mol

15.0 g (1 mol/ 17.03 g)= 0.881 mol NH₃

2) let's convert the grams of water into kilograms (just divide by 1000)

250.0 g= 0.2500 kg

3) let's plug in the values into the molality formula

molality= mol/ Kg---> 0.881 mol/ 0.2500 kg= 3.52 m
6 0
3 years ago
Glycerol is a subunit molecule of a
Schach [20]
<span>Glycerol is a sub-unit molecule of a Lipid

So, option C is your answer.

Hope this helps!
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6 0
2 years ago
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