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Diano4ka-milaya [45]
4 years ago
8

which statement besy describes how the calormeter can be used to determine ghe specific heat capacity of the metal sample

Chemistry
1 answer:
Vesna [10]4 years ago
4 0

Answer:

Energy transfers to the metal from the water and calorimeter until they are all at room temperature.

Explanation:

i hope this helps

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Help How many atoms of hydrogen(gas) form if 10 grams of aluminum react? 2Al + 6HCl = 2AlCl3 + 3H2
arlik [135]

Answer: 3.35x10²³atoms H2

Explanation: solution attached:

Convert mass of Al to moles

Do the mole to mole ratio between Al and H2

Convert moles of H2 to atoms using Avogadro's number.

4 0
3 years ago
How much heat is required to raise the temperature of a 6.21 g sample of iron from 25.0 oC to 79.8 oC?
telo118 [61]

Answer:

151.1J

Explanation:

Given parameters:

Mass of iron  = 6.21g

Initial temperature of iron  = 25°C

Final temperature of iron  = 79.8°C

Unknown:

Amount of heat = ?

Solution:

The amount of heat require to cause this temperature can be determined using the expression below;

    H  = m c (T₂ - T₁)

H is the amount of heat

m is the mass

c is the specific heat capacity

T is the temperature

    Specific heat capacity of iron 0.444J/g°C

Insert the parameters and solve;

     H  = 6.21 x 0.444 x (79.8 - 25)

     H   = 151.1J

5 0
3 years ago
Give the formula for the alkane containing 500 carbons.
Fiesta28 [93]

Answer:

1002

Explanation:

C_{2n}H_{2n+2}

500 multiply by 2 add 2

5 0
3 years ago
Help answer this asap!
Zielflug [23.3K]

Answer:

B

Explanation:

Molarity measures the strength of a solution. Remember, a solution is made up of two parts: the solvent (which does the dissolving) and the solute (the substance that is dissolved). The more solute there is, the higher the concentrate and therefore the higher the molarity of the solution. Thus B is the answer

3 0
3 years ago
.....heeelppp plz????? ​
eimsori [14]

Answer:

9

option d 9

pH of a 10^-5 M HCI solution is 9

5 0
3 years ago
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