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garik1379 [7]
3 years ago
13

If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?

Chemistry
1 answer:
notka56 [123]3 years ago
6 0

Answer:

can u send the qsn 4rm the start so tt I can help

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in this trial, 0.400 M NaOH was added to 40.00 ml of 0.400 M HCl. How many ml of base must be added to cause the colour to chang
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Answer:

The amount of Ml that is needed

6 0
2 years ago
What is the percent mass oxygen in calcium carbonate (CaCo3)?
Gnoma [55]
  <span>Step 1 is to determine the mass of each part 
Mass of Ca is 40.08 g 
Mass of C is 12.01 g 
Mass of O is 16.00 x 3 = 48.00 g 
Step 2 is to determine the total mass of the compound 
Total mass of CaCO3 is 40.08 + 12.01 + 48.00 = 100.09 g 

Step 3 is to determine the % of each part using the following formula: 
Mass of part / total mass x 100 = 

40.08 / 100.09 x 100 = 40.04 % Ca 

12.01 / 100.09 x 100 = 12.00 % C 

48.00 / 100.09 x 100 = 47.96 % O 

Step 4 is to double check by adding all percentages. If they equal 100, then I probably did it right. :) 
40.04 
+12.00 
+47.96 
=100.00</span><span>
</span>
4 0
2 years ago
Read 2 more answers
When the isotonic saline solution described in part A is connected to an unknown solution via a semipermeable membrane, the unkn
ozzi

B. The unknown solution had the lower concentration.

Explanation:

Osmosis is a phenomenon in which the molecules of the solvent has a tendency to move through a membrane which is semipermeable from lower concentrated side to the higher concentration side, so that the concentrations on both sides of the membrane must be equal.

So the unknown solution may have lesser concentration than the isotonic solution so that molecules of that solution move from less concentrated side to the more concentrated side, so its level drops.

3 0
3 years ago
Someone thought there was water in Beaker C. He drank some and quickly spat out.He said that it was salty. Explain why this happ
fomenos

Answer:

He assumed wrongly

Explanation:

It happened this way because the person assumed wrongly.

Most other compounds have the same physical appearance as water especially when in liquid form.

  • This can be a very tricky one in the laboratory.
  • The sense of taste is not the best way to fathom what a particular compound is made up of.
  • This is the reason why this student or person faced this sort of problem.
  • Water has different properties that can be tested for using simple techniques in the laboratory.
4 0
2 years ago
Hii
-BARSIC- [3]

Answer:

im interrested

Explanation:

4 0
2 years ago
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