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hichkok12 [17]
2 years ago
5

Someone help me please

Chemistry
2 answers:
Alja [10]2 years ago
3 0

Answer:

1 - Biometric

2- Unique

3 - Skin cells

4 - The latent

5 - basal

6 - buckling

Explanation:

AleksAgata [21]2 years ago
3 0
1-biometric



Explanation:
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Two 10g blocks, one of copper and one of iron, were heated from 300 K to 400K (a temperature difference of 100 K).
12345 [234]

1) 385 J

2) 450 J

Explanation:

1)

The amount of energy that must be absorbed by a certain substance in order to increase its temperature by \Delta T is given by the equation:

Q=mC\Delta T

where

m is the mass of the substance

C is its specific heat capacity

\Delta T is the increase in temperature of the substance

For the block of copper in this problem, we have:

m = 10 g is the mass

C=0.385 J/gK is the specific heat capacity of copper

\Delta T=400-300 = 100 K is the change in temperature

So, the energy absorbed by the block of copper is

Q=(10)(0.385)(100)=385 J

2)

Similarly for the block of iron, the energy absorbed by the iron is given by

Q=mC\Delta T

where

m is the mass of the block of iron

C is its specific heat capacity of iron

\Delta T is the increase in temperature of the block

Here we have:

m = 10 g is the mass of the block

C=0.450 J/gK is the specific heat capacity of iron

\Delta T=400-300 = 100 K is the change in temperature

So, the energy absorbed by the block of iron is

Q=(10)(0.450)(100)=450 J

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Write a hypothesis about what causes aliens to change their <br> shape
Leviafan [203]
The difference in elements??
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Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?
slavikrds [6]
The water isn’t at sea level
3 0
3 years ago
Read 2 more answers
Select the correct answer.
Goshia [24]

Answer: C.   146 g

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{ mass}}{\text{Molar mass}}  

Thus  Mass=\text{Number of moles}\times {\text{Molar mass}}  

For sodium nitrate (NaNO_3)

moles = 1.72

Molar mass of sodium nitrate  (NaNO_3)= 85g/mol

Putting values in above equation, we get:

Mass=1.72moles\times 85g/mol=146g  

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3 years ago
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What does it mean for a solution to be saturated?
Semmy [17]

Answer:

D. The maximum amount of solute is dissolved in it.

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2 years ago
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