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SOVA2 [1]
3 years ago
9

Helllppppppppppp plzzzzzzzzzz​

Chemistry
1 answer:
kenny6666 [7]3 years ago
7 0

Answer:what do you need help with???

Explanation:

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What is your opinion about:
tatyana61 [14]

Opinion : I disagree recycling can help them, but it still will not clear the environment.

4 0
3 years ago
Make the following conversion. 0.075 m = _____ cm 7.5 75 0.0075 0.00075
GaryK [48]
In the given question we need to convert 0.075 meter into centimeter. For this purpose we need to know the relation between meter and centimeter. Then only this problem can be solved and the correct answer reached.
Now we know that
1 meter = 100 centimeter
Then
0.075 meter = [(100/1) * 0.075] centimeter
We know that any number when divided by 1 gives the same number.
So
0.075 meter = (100 * 0.075) centimeter
                    = (100 * 75/1000) centimeter
                    = (7500/1000) centimeter
                    = (75/10) centimeter
                    = 7.5 centimeter.
So from all the given options the correct answer to the question is 7.5 centimeter.  
8 0
3 years ago
Complete combustion of 2.90g of a hydrocarbon produced 9.32g of CO2 and 3.18g of H2O. What is the empirical formula for the hydr
Olenka [21]

Answer;

= C3H5

Explanation and solution;

1 mole of CO2 contains 44 g, of which 12 g are carbon

Thus, mass of carbon in 9.32 g will be;

(12/44) × 9.32 g = 2.542 g

Mass of Hydrogen in 3.18 g of water;

= (2/18) × 3.18 g = 0.353 g

we then find the number of moles;

Moles of carbon ; 2.542 /12 = 0.2118 moles

Moles of Hydrogen = 0.353 moles

The ratios of C ; H ;

= 1 :  0.353 /0.2118

= 1 : 5/3

= 3: 5

Therefore; the empirical formula of the hydrogen carbon is; C3H5

5 0
3 years ago
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White lead is a pigment used by artists for centuries
MAVERICK [17]

Answer:

true

Explanation:

pigment contains chlorine which gives color

3 0
2 years ago
The waste product of nuclear energy which is a possible pollutant is:
worty [1.4K]

Answer:

CCCCCCC

Explanation:

6 0
3 years ago
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