All categories

2 years ago

Calculate the number of moles contained in 550ml of carbon dionide at stp

Chemistry

1 answer:

g100num [7]2 years ago

3 0

The answer is 20 I think

You might be interested in

A 25.0 g sample of an alloy was heated to 100.0 oC and dropped into a beaker containing 90 grams of water at 25.32 oC. The tempe

elena55 [62]

Answer:

The specific heat of the alloy $C_{a} = 0.37 \frac{KJ}{Kg K}$

Explanation:

Mass of an alloy $m_{a}$ = 25 gm

Initial temperature $T_{a}$ = 100°c = 373 K

Mass of water $m_{w}$ = 90 gm

Initial temperature of water $T_{w}$ = 25.32 °c = 298.32 K

Final temperature $T_{f}$ = 27.18 °c = 300.18 K

From energy balance equation

Heat lost by alloy = Heat gain by water

$m_{a}$ $C_{a}$ [ $T_{a}$ - $T_{f}$ ] = $m_{w}$ $C_w$ ( $T_{f}$ - $T_{w}$ )

25 × $C_{a}$ × ( 373 - 300.18 ) = 90 × 4.2 (300.18 - 298.32)

$C_{a} = 0.37 \frac{KJ}{Kg K}$

This is the specific heat of the alloy.

4 0

3 years ago

Please help I’m marking a branliest answer ☹️☹️☹️☹️☹️☹️

Doss [256]

The answer would be C

7 0

2 years ago

What is the name of an atom with 3 protons and 4 neutrons?

asambeis [7]

Answer:

Those with 3 protons and 3 neutrons are known as the isotope lithium-6. Those with 3 protons and 4 neutrons are known as the isotope lithium-7.

Explanation:

4 0

2 years ago

Read 2 more answers

If 12 moles of Al2O3 are produced, how many moles of aluminum reacted?

Mandarinka [93]

Answer:

if 12 moles are produced then it came 24 moles of Al(OH)3

Explanation:

6 0

2 years ago

A precipitate is a solid that sometimes forms when two liquids combine. A true B False

r-ruslan [8.4K]

<h2>Question:</h2>

A precipitate is a solid that sometimes forms when two liquids combine.

<h2>Answer:</h2>

A. True 

<h2>Explanation:</h2>

Because the Precipitate it's forms solid when two liquids combine to precipitate.

<h2>#CARRYONLEARNING </h2><h2>#STUDYWELL </h2>

3 0

2 years ago

Read 2 more answers