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allsm [11]
3 years ago
6

A city planner needs a new method for cleaning a town’s water supply. He hires a scientist to research the issue. Because the sc

ientist is being paid by the city planner, her research is not valid.
True

False
Chemistry
2 answers:
Maurinko [17]3 years ago
8 0
False  

just because she is being paid by him does not mean anything unless the planner is cheating and or she has some reason to be inaccurate
lilavasa [31]3 years ago
6 0
False i am 87 % sure
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A 250.0 gram block is placed on a balance. The balance measures the mass of the block as 243.9 grams. What is the percent error
adell [148]
To compute the percent error, you divide the absolute difference between the actual value and the measured value with the actual value. Then, multiply it with 100 to get the percentage. The solution is as follows:

Percent error = (250 - 243.9)/250 * 100
Percent error = 2.44%
7 0
3 years ago
Read 2 more answers
1 Select the correct answer! Which statement best explains the octet rule? A. Atoms gain, lose, or share electrons to achieve a
Ostrovityanka [42]

Answer:

A. Atoms gain, lose, or share electrons to achieve a full valence shell

Explanation:

The octet rule is best explained as the process in which atoms lose or gain or share electrons to achieve a full valence shell.

  • In this process bonds are formed when there is an attraction between the two substances.
  • For electrovalent compounds, an atom will lose electrons or gain electron to form an ion, the electrostatic attraction causes the bond formation.
  • Covalent compounds, form by sharing of electrons.

Therefore, the octet rule is attained when atoms gain full valence configuration.

5 0
3 years ago
What happens when two objects when they are brought closer together The mass of both objects decrease The mass of both objects i
Maurinko [17]

Answer:

The correct option is

The gravitational force between them increases

Explanation:

According to Newton's law of universal gravitation states that the force of attraction between two bodies is directly proportional to the product of the masses of the bodies and inversely proportional to the square of the distance of their centers from each other.

The formula for universal gravitation is given as follows;

F_{1} = F_{2} =G \times \dfrac{m_{1}  \times m_{2}}{r^{2}}

Where;

F₁, and F₂ = The gravitational forces of attraction on each mass

G = The gravitational constant

m₁ = The mass of one body

m₂ = The mass of the body

r = The distance between the centers of the two bodies

Therefore, the gravitational force of attraction on each object is inversely proportional to the as the distance between the centers of the two bodies

When the distance between the centers of the two bodies decreases, the two objects are brought closer together, the gravitational force of attraction between them increases.

8 0
3 years ago
Answer fast plzzzzzzz
Neko [114]

Answer:

8

Explanation:

The duckweed is highest at pH of 8.

- Hope that helped! Please let me know if you need further explanation.

3 0
3 years ago
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How many grams are in 0.040 moles zirconium (Zr)? Only 2 significant number?
pashok25 [27]
<h2>Answer:</h2><h2>There are 3.64896 in 0.040 moles zirconium.</h2>

7 0
3 years ago
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