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nadezda [96]
2 years ago
6

Who else had to do a final model for the rust unit ​

Chemistry
1 answer:
ArbitrLikvidat [17]2 years ago
4 0
Which one? Are u saying.
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What kind of questions can science answer
IrinaK [193]

Answer:

hypothesis

Explanation:

a question that can be answered wity a hypothesis is a question a scientist can answer

5 0
3 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
3 years ago
An aqueous solution of sodium
DochEvi [55]

Answer:

2.5×10^-7mol/dm^3

Explanation:

Firstly convert the cm^3 to dm^3

200×1000=200000dm^3

Calculate the g/dm^3

2/200000=0.00001g/dm^3

To calculate mol/dm^3

Mol/dm^3=mass given\molar mass

=0.00001/40

=2.5×10^-7mol/dm^3

8 0
3 years ago
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Matthew has been collecting quarters in a jar. He has 176 quarters. What is the value of the coins in his jar?
AURORKA [14]

Answer:

The correct answer is : 44 dollars.

Explanation:

A quarter is one fourth of a dollar that is the reason it is known as quarter. A quarter is 25 cents or 0.25 dollar in value. If Matthew has 176 quarters in his jar than the value of the total coins would be:

1 quarter = 0.25 dollar

1 quarter = 1/4 dollar.

4 quarter = 1 dollar

then, 176 / 4 = x dollar

 = 44 dollar

Thus, The correct answer is : 44 dollars.

3 0
3 years ago
Hurry help me 30 points
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Answer:

1. B     2. C      3. B or C   4. A   5. A

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