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icang [17]
3 years ago
13

Please help! I put all my points into this question, brainliest, thanks, rattings, etc.

Chemistry
1 answer:
kkurt [141]3 years ago
8 0

A higher concentration of reactants leads to more collisions per unit time and leads to an increasing reaction rate. Changing the pressure of gaseous reactants is, in effect, changing their concentration. The increased number of collisions caused by a higher pressure generally increases the reaction rate.


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u²=2×9.8×0.8=15.68
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Which of the following is an example of a compound? A. helium B. water C. hydrogen B. oxygen
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Determine the pH of a solution of 0.00278 M of HClO4. Report the answer to two digits past the decimal.
aleksandrvk [35]

Answer:

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<u><em>The pH of a solution of 0.00278 M of HClO₄ is 2.56</em></u>

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3 years ago
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Answer:

\Delta \rho =2.22 g/mL

Explanation:

Hello,

In this case, since a change in science is widely known to be considered as a subtraction between the the final and initial values of two measured variables and is represented via Δ, here the final density is 5.43 g/mL and the initial one was 3.21 g/mL, therefore, the change in density is:

\Delta \rho=\rho _f-\rho _i\\ \\\Delta \rho=5.43g/mL-3.21g/mL\\\\\Delta \rho =2.22 g/mL

Best regards.

3 0
2 years ago
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