Answer: 2.186 m
Explanation:
formula for molality: (mol solute)/(kg solvent)
Na2CO3 = solute
510g Na2CO3 * ( 1 mol / 106 g) = 4.811 mol solute
ethylene glycol = solvent
2.2 * 10^3 g * ( 1 kg / 1000 g) = 2.2 kg
(4.811/2.2) = 2.186
Answer:
The answer to your question is below
Explanation:
I attached a picture because it says that I was writing improper words.
The rate of reaction refers to how fast or slow a reaction is. The rate of reaction can be increased by;
i) Using finely divided sodium carbonate
ii) Increasing the temperature
<h3>Rate of reaction</h3>
Thee term rate of reaction refers to the pace of a chemical reaction. A reaction could be fast or slow.
To increase the rate of this reaction;
i) The sodium bicarbonate could be used in the finely divided form.
ii) The temperature could be raised.
Learn more about rate of reaction: brainly.com/question/13440548
Answer:
8.3mL
Explanation:
According to the question, the initial volume of a measured amount of water is 12.5mL. Karen then adds a rubber stopper that weighs 2.3grams. This increases the volume of the water.
The increase in the volume of the water is attributed to the rubber stopper. Hence, to calculate the volume of the rubber stopper, we subtract the initial volume of the water from the final volume. i.e.
Volume of added rubber stopper = final volume of water - initial volume of water
= 20.8 - 12.5
= 8.3mL
Hence, the volume of the rubber stopper is 8.3mL
Hey there !
<span>Convert Joule to KJ :
</span>
1 j ---------------- 0.001 kj
53.69 j ----------- Kj
Kj = 53.69 * 0.001
=> 0.05369 Kj
T = ΔH / <span>ΔS
T = 49.09 / 0.05369
T = 914.32ºC</span>
