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Tom [10]
2 years ago
9

Help please giving brainliest!

Chemistry
1 answer:
Alenkinab [10]2 years ago
4 0
Answer:

Temperature and volume are directly related.

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. :)
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A silver necklace has a density of 10.5 g/mL and a volume of 1.5 mL. What is the mass of the silver necklace?
melamori03 [73]

Answer:

15.75g

Explanation:

Rearrange the formula: density = mass/volume, so that mass is the subject: mass = density × volume

Now substitute (plug in) the known values into the formula:

mass = 10.5 × 1.5 ⇒ mass = 15.75g

The mass of the silver necklace is 15.75g

Hope this helps!

4 0
2 years ago
8. How many atoms of cobalt are in a 0.39 mole sample of CoC
Debora [2.8K]

8.98

×

N

A

 

cobalt atoms

Explanation:

N

A

,

Avogadro's number

specifies  

6.0221

×

10

23

individual particles. It is simply another collective number like a dozen, or a score, or a gross.  

N

A

has the property that  

6.0221

×

10

23

individual cobalt atoms has a mass of  

58.93

⋅

g

. How did I know that? Did I have it memorized?

So the quantity is  

≈

 

54

×

10

23

cobalt atoms.

3 0
3 years ago
The light-independent reactions of photosynthesis need
Oxana [17]

Answer:

I don’t know

Explanation:

3 0
3 years ago
How many protons does this atom have?:____
Allisa [31]

Answer:

1.6

2.8

3.6

Explanation:

4 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST!! Determine the volume of a container that holds 2.4 mol of gas at STP.
kykrilka [37]

Answer:

2.4 mol x 22.4 liter = 53.76 liters

1 mole

Explanation:

5 0
3 years ago
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