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Mademuasel [1]
3 years ago
11

Why does a human body need proteins?

Chemistry
1 answer:
Sophie [7]3 years ago
5 0
I’m pretty sure the answer would be B.
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1. Classify rust:
Arisa [49]
1. Rust, or Fe2O3, is a Chemical Compound.

2. Carbon is a Chemical Element found as C on the periodic table.

3. Apple Juice is a Heterogeneous Mixture, as it is uniform throughout. If it wasn't uniform, there would be yucky lumps in your apple juice :)

If I helped you out, I would greatly appreciate if you went through my other answers I gave you and gave them the brainliest answer :)
7 0
3 years ago
The rate of chemical reactions generally ____ as temperature is raised
Zepler [3.9K]

The rate of chemical reactions generally happen <em>faster</em> when the temperature is raised.

This happens because the reactant's molecules move faster when the temperature is raised. The molecules start to bounce around more, increasing the chance for the reaction to happen, or to increase the speed at which the reaction occurs. Hope this helped.

6 0
4 years ago
Read 2 more answers
Complete combustion of 8.10 g of a hydrocarbon produced 25.9 g of CO2 and 9.27 g of H2O. What is the empirical formula for the h
balu736 [363]

CxHy     +  O2    -->    x CO2     +    y/2  H2O

 

Find the moles of CO2 :     18.9g  /  44 g/mol   =    .430 mol CO2   = .430 mol of C in compound

Find the moles of H2O:      5.79g / 18 g/mol     =     .322 mol H2O   = .166 mol of H in compound

 

Find the mass of C and H in the compound:

                             .430mol  x 12  =  5.16 g C

                              .166mol  x 1g   = .166g H   

 

When you add these up they indicate a mass of 5.33 g for the compound, not 5.80g as you stated in the problem.

Therefore it is likely that either the mass of the CO2 or the mass of H20 produced is incorrect (most likely a typo).

In any event, to find the formula, you would take the moles of C and H and convert to a whole number ratio (this is usually done by dividing both of them by the smaller value).

8 0
4 years ago
If you have ever peeled the label off a glass jar, you may have noticed that the glue does not easily wash off with water. Howev
shepuryov [24]

Answer:

It can be removed by acidic chemicals

Explanation:

8 0
3 years ago
Can you me what is a tsunamis is
Anton [14]
<span>a long high sea wave caused by an earthquake, submarine landslide, or other disturbance, is the definition.  </span>
4 0
3 years ago
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