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Doss [256]
3 years ago
11

You have 16.6 g of water at 40.2 C. How many Joules are needed to warm the water to 44.8 C?

Chemistry
1 answer:
iragen [17]3 years ago
3 0

Answer:

Q = 319.49 J

Explanation:

Given that,

Mass, m = 16.6 g

Initial temperature, T_i=40.2^{\circ} C

We need to find the heat needed to warm the water to 44.8 °C. The formula that is used to find the heat required is given by :

Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=16.6\ g\times 4.184\ J/g^{\circ} C\times (44.8-40.2)^{\circ} C\\\\Q=319.49\ J

So, 319.49 J of heat is needed to warm water.

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The reaction of iron ore with carbon follows the equation: 2 Fe2O3 + 3 C 4 Fe + 3 CO2.
ale4655 [162]

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3 years ago
How many grams of chlorine gas can be produced when 50.0 grams of aluminum chloride decompose? 2AlCl3→ 2Al + 3Cl2
lianna [129]

Answer:

Explanation:

Approx.

425

⋅

g

Explanation:

2

A

l

(

s

)

+

3

C

l

2

(

g

)

→

2

A

l

C

l

3

(

s

)

You have given a stoichiometrically balanced equation, so bravo.

The equation explicitly tells us that

54

⋅

g

of aluminum metal reacts with

6

×

35.45

⋅

g

C

l

2

gas to give

266.7

⋅

g

of

aluminum trichloride

hope this helps

6 0
3 years ago
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