CHEMISTRY MIDDLE SCHOOL

Besides temperature and precipitation, which other factor does the Köppen climate classification system use todefine climate regions?
altitude
hemisphere
solar energy
vegetation?

Answers

Answer 1
Answer:

Answer:

d

Explanation:
Answer 2
Answer:

Answer:

D:vegetation

Explanation:

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The molecular formula of a compound used for bleaching hair is H2O2. calculate (a) mass of this compound that would contain 2.5 moles (b) no of moles of this compound that would exactly weight 30 get.

Answers

The RFM (Relative Formula Mass) of the substance H2O2 is:
H2 = 1 x 2
= 2
O2 = 16 x 2
= 32

32 + 2 = 34

USE THIS FORMULA:

*Mass = Moles x RFM*

Part A:

Mass = Moles x RFM
     = 2.5 x 34
     = 85 g

(You can always rearrange this formula to suit the question)

Part B:

Moles = Mass/RFM
          = 30/34
           =0.8823529........ (Need a calculator haha)
           =0.88 (Rounded up to 2 decimal places)

I hope I helped, ask if you have any questions.


         

what happens when you mix muriatic acid and phenolphthalein indicator together

Need Help

Answers

When you mix muriatic acid and phenolphthalein indicator together, the solution is colorless. Phenolphthalein indicator will turn pink to basic compounds only not acidic solutions.

What are the main agents of change in the rock cycle?

HELP PLEASE.

Answers

temperature, pressure ,weathering ,and erosion :)

5. Enzymes and acidic juices in the stomach, whichbreak proteins down into smaller molecules, is known

Answers

they are known has catalyst.

Can I have an example of both a chemical and physical change happening at the same time. It can’t be a burning candle, burning wood, or food chewing and digestion.

Answers

Quick lime is calcium oxide. Itis an example of physical and chemical change.

Explanation:

  • The physical change is water turning into steam while heating.
  • It’s a chemical change. Quicklime is calcium oxide (CaO). When water is added to the calcium oxide, it is converted to calcium hydroxide in the reaction:

                                   CaO + H₂O -> Ca(OH)₂

  • In geology when earthen materials are exposed to water and are weakened or decomposed.
  • This process is referred to as slaking. Thus, calcium hydroxide resulting from the treatment of quicklime reacting with water form slaked lime.

Explain how following a fitness plan can help you meet a goal

Answers

because if you follow a fitness plan you can get done a lot of stuff that you can't without a plan so like you make a plan of what you are going to do instead of just doing random fitness stuff
If u follow a fitness plan it helps becuase it helps u be healthy and loose weight and junck food has bad stuff for ur body
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