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OLEGan [10]
2 years ago
13

HeLpPp asap I’ll mark you as brainlister

Chemistry
1 answer:
jeka57 [31]2 years ago
8 0
It’s 1 or 3 sorry if this is wrong
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"Rate" is related to: <br> volume <br> time <br> distance <br> percentage
wariber [46]

Answer:

Time

Explanation:

8 0
3 years ago
A 40.5 g sample of aluminum is cooled 7.5°C. The specific heat capacity of aluminum is
sweet-ann [11.9K]
Q=mc\Delta T
Q= 40.5g x 0.900 J/g degree Celsius x 7.5
Q= 273.4 J.
Even if it is cooled , we use the same temperature as heating it.
3 0
3 years ago
The part of an atom where nearly whole mass is<br> concentrated is called
qwelly [4]

Answer:

.....is called nucleus which have a positive charge the positive charge in the nucleus is balanced by the negative electrons making an atom neutral

3 0
3 years ago
Which sequence of coeffients should be placed in the blanks to balance this equation __c6h12o6
Makovka662 [10]

Hi. I can't help you if you don't have an equation. Please provide one.

7 0
3 years ago
Read 2 more answers
How can I balance chemical equations by providing the correct coefficients? For example: [?]Pb(NO3)2 + [?]NaCrO4 = [?]PbCrO4 + [
melomori [17]

Answer:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + 2NaNO₃

The coefficients are: 1, 1, 1, 2

Explanation:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + NaNO₃

The above equation can be balance as follow:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + NaNO₃

There are 2 atoms of Na on the left side and 1 atom on the right side. It can be balance by writing 2 before NaNO₃ as shown below:

Pb(NO₃)₂ + Na₂CrO₄ —> PbCrO₄ + 2NaNO₃

Now the equation is balanced.

The coefficients are: 1, 1, 1, 2

3 0
2 years ago
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