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Sedaia [141]
3 years ago
6

(02.01 LC)

Chemistry
1 answer:
slava [35]3 years ago
4 0
Hi. The first one is correct. They have no charge and are in located inside the nucleus.
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What is a taste threshold test?
Burka [1]

The basic tastes of sweet, salty and sour have different thresholds, or concentration levels, at which they can be detected. In other words, it is easier to detect some flavors at low concentrations compared with other flavors. Taste thresholds can vary from person to person.

6 0
3 years ago
How many moles of KClO3 reacted if 9 moles of O2 were produced in this reaction: 2KClO3 → 2KCl + 3O2
kherson [118]
2 mol KClO₃ - 3 mol O₂
x mol KClO₃ - 9 mol O₂

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3 0
3 years ago
A sample of motor oil has a mass of 440 g and a volume of 0.27 L. What is its<br> density (in g/mL)?
stepan [7]

Answer:

<h2>Density =1.63 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

To find the density in g/mL , we must first convert the volume from L to mL

From the question

mass = 440 g

1 L = 1000 mL

0.27 L = 0.27 × 1000 = 270 mL

volume = 270 mL

Substitute the values into the above formula and solve for the Density

That's

Density =  \frac{440}{270}

= 1.629629...

We have the final answer as

<h3>Density =1.63 g/mL</h3>

Hope this helps you

3 0
3 years ago
An isotope has a half-life of 2 days. How much will be left after 6 days?
Stells [14]
I think the answer is C) 1/8, I’m sorry if it’s wrong
3 0
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What happens to particles as they are heated or cooled, Kinetic Theory of Matter?
mr Goodwill [35]
They start to evaporate 
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