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kiruha [24]
2 years ago
12

The total mass of a chemical reaction always _____.

Chemistry
2 answers:
makkiz [27]2 years ago
5 0

Answer:

remains constant.

Explanation:

never [62]2 years ago
3 0
Remains constant is the answer
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The actual density of iron is 7.874 g/mL. In a laboratory investigation, Jason finds the density of a piece of iron to be 7.921
mixas84 [53]

The percent error associated with Jason’s measurement is 0.596%.

HOW TO CALCULATE PERCENTAGE ERROR:

  • The percentage error of a measurement can be calculated by following the following process:
  1. Find the difference between the true value and the measured value of a quantity.
  2. Then, divide by the true value and then multiplied by 100

  • The true value of the density of iron is 7.874 g/mL
  • Jason observed value is 7.921 g/mL

Difference = 7.921 g/mL - 7.874 g/mL

Difference = 0.047 g/mL

Percentage error = 0.047/7.874 × 100

Percentage error = 0.596%.

Therefore, the percent error associated with Jason’s measurement is 0.596%.

Learn more: brainly.com/question/18074661?referrer=searchResults

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1 year ago
What is the hybridization of the carbon atoms in 1,3-butadiene, h2c=ch-ch=ch2?
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The main formula is as follow  is explained in the attached file  (please look at the examples)

the 1,3- butadiene is h2c=ch-ch=ch2, so we have 

sp²             sp²     sp²               sp²
h2c    =     ch   -     ch         =      ch2

<span>the hybridization of the carbon atoms  is </span>sp²  : trigonal planar

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3 years ago
What happens to a solid if thermal energy is reduced
kompoz [17]
When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.
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Which isotope of lead has a double magic number? (1) Pb-206 (2) Pb-207 (3) Pb-208 (4) Pb-209
antiseptic1488 [7]
It is Pb-208, answer 3.
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14. An increase in temperature results in an increase in ...
shusha [124]

Answer: its C. and B.

Explanation:

hopes this helps

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2 years ago
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