I need help with number 6 what’s the answer help please ?

Chemistry

1 answer:

valkas [14]4 years ago

6 0

the control group is what you compare to what you are testing. For example im trying to find which liquid has the most properties to water liquid a b c or d. My control group is water.

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An object has a mass of 2800g and a volume of 3cm3. What is its density?<br>

jeka57 [31]

Answer:

933.33 g/cm³

Explanation:

Density = mass / volume

Density = 2800/3 = 933.3 g/cm³.

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3 years ago

Plz help..<br> How to name alcohols...

earnstyle [38]

Answer:

Alcohols are usually named by the first procedure and are designated by an -ol suffix, as in ethanol, CH3CH2OH (note that a locator number is unnecessary on a two-carbon chain). On longer chains the location of the hydroxyl group determines chain numbering. For example: (CH3)2C=CHCH(OH)CH3 is 4-methyl-3-penten-2-ol.10

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3 years ago

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How will the following changes affect the mole fraction of chlorine gas, χcl2, in the equilibrium mixture.?

sammy [17]

If the reaction is represented by:
PCl₃ + Cl₂ <-> PCl₅ (exothermic)

the mole fraction of chlorine in the equilibrium mixture will change according to the following:
Decrease the volume: decrease
Increase the temperature: increase
Increase the volume: increase
Decrease the temperature: decrease

4 0

3 years ago

Help. The answer to question 1 I didn't mean to click so please answer that as well.

Zepler [3.9K]

We have that energy=specific heat * change in temperature * mass. Thus, we have the final temperature (22) minus the initial temperature (55) to equal -33 as our change in temperature. Our specific heat is in J/g*C, so we're good with that because g stands for grams and the aluminium is measured in grams. As there are 10 grams of aluminum, we have
$10*(-33)*0.902=-298 ish$ as our final temperature

An exothermic reaction would release energy and would therefore lose heat itself, while an endothermic reaction would absorb energy and gain heat. Therefore, losing heat would be an exothermic reaction

Feel free to ask further questions!

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3 years ago

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natulia [17]

Answer:

I think it the carbon 14 which is a half life of 5730 because in 4.5billion years ago I don't think any human being existed on earth I'm not sure I hope that I helped you and good luck .

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3 years ago