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Aleks [24]
3 years ago
11

(34.6785x5.39)+435.12

Chemistry
1 answer:
Kitty [74]3 years ago
8 0
To solve this, we should follow order of operations. To start, we should multiply the values inside of the parentheses.

(34.6785*5.39)+435.12
186.917115+435.12

Now, we should add the 2 values we are left with together.

 186.917115
<u>+435.120000
</u><u />622.037115

Using the math above, we can see that this expression is equal to 622.037115.
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A sample of chromium oxide is 76.5hromium by weight. what is the simplest formula of the oxide?
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6 0
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We have a sample of water vapor which cools from 150 °C to 125 °C. What happens to the motion of the molecules during this time
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<u>Explanation</u>:

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victus00 [196]

Answer:

5: 0.16

6: 50

Explanation:

Question 5:

We can use the equation density = mass/ volume.

We already have the mass (12g), but now we need to find the volume of the cylinder.

The equation for this is πr²h

So we know the radius is 2 and the height is 6.

π x (2)² x 6 = 24π = 75.398cm³

Now we can use the density equation above:

12/75.398 = 0.1592g/cm³ = 0.16g/cm³.

Question 6:

This time, we have to rearrange the equation density = mass/ volume to find the mass.

We know mass = density x volume.

From the question, the density is 2.5g/mL and the volume is 20mL.

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5 0
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