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Ber [7]
3 years ago
6

Calculate the weighted average

Chemistry
1 answer:
padilas [110]3 years ago
3 0
Of what?
Attach a link or pic 
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How many moles of HNO3 will be produced 3 NO2+H2O=2HNO3+ NO
valkas [14]

Answer:

2 moles of HNO3

Explanation:

The equation seems to be balanced correctly. The problem is we done know what you started with. We will assume it is 3 moles of NO2.

If that is the case then 2 moles of HNO3 will be produced.

8 0
3 years ago
A 45.0-gram sample of copper metal was heated from 20.0°C to 100.0°C. Calculate the heat absorbed, in kJ, by the metal.
s2008m [1.1K]

Answer:

1.386 KJ

Explanation:

From the question given above, the following data were obtained:

Mass (M) of copper = 45 g

Initial temperature (T1) = 20.0°C

Final temperature (T2) = 100.0°C

Heat absorbed (Q) =..?

Next, we shall determine the change in temperature. This can be obtained as follow:

Initial temperature (T1) = 20.0°C

Final temperature (T2) = 100.0°C

Change in temperature (ΔT) =?

ΔT = T2 – T1

ΔT = 100 – 20

ΔT = 80 °C

Next, we shall determine the heat absorbed by the sample of copper as follow:

Mass (M) of copper = 45 g

Change in temperature (ΔT) = 80 °C

Specific heat capacity (C) of copper = 0.385 J/gºC

Heat absorbed (Q) =..?

Q = MCΔT

Q = 45 × 0.385 × 80

Q = 1386 J

Finally, we shall convert 1386 J to KJ. This can be obtained as follow:

1000 J = 1 KJ

Therefore,

1386 J = 1386 J × 1 KJ /1000 J

1386 J = 1.386 KJ

Thus, the heat absorbed by the sample of the sample of copper is 1.386 KJ.

5 0
2 years ago
A satellite can move around Earth in a circular orbit at constant height because
dybincka [34]
I believe it’s answer B because even in space gravity plays roles.
4 0
3 years ago
What is the parameter for finding the ∆H of a body...?​
11111nata11111 [884]

Answer: ΔG=ΔG0+RTlnQ where Q is the ratio of concentrations (or activities) of the products divided by the reactants. Under standard conditions Q=1 and ΔG=ΔG0

Explanation: hope this helps im sorry if i didnt

7 0
2 years ago
Phosphorus will ____ electrons to complete its octet changing into an ____
Paraphin [41]
Steal; Anion
This is the answer because phosphorous is very electronegative.
3 0
2 years ago
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