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katen-ka-za [31]
3 years ago
12

Read the scenario.

Chemistry
2 answers:
8_murik_8 [283]3 years ago
6 0

The answer is C. 2 m/s

svet-max [94.6K]3 years ago
3 0

Answer: 2m/s

Explanation:

Initial position = 2m

Final position = 10m

Distance = 10-2 = 8m

Time = 4s

Velocity = distance(m) /time(s)

Velocity = 8/4 = 2m/s

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Elementary grade science class topic showing the three stages of the discovery approach​
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Explanation:

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5 0
2 years ago
In the reaction, 3Cu + 2Al3+ → 3Cu2+ + 2Al, which substance is being oxidized?
Wittaler [7]
In this reaction, Copper is the element being oxidized because it is losing electrons. It starts with a neutral charge (0) and ends up with a 6+ charge. Because its charge is increasing, it is being oxidized (losing electrons).

4 0
3 years ago
Given the reaction:
dezoksy [38]

Answer:

V = 22.34 L

Explanation:

Given data:

Volume of O₂ needed = ?

Temperature and pressure = standard

Number of molecules of water produced = 6.0× 10²³

Solution:

Chemical equation:

2H₂ + O₂       →      2H₂O

Number of moles of water:

1 mole contain 6.022× 10²³ molecules

6.0× 10²³ molecules ×  1 mole  /  6.022× 10²³ molecules

0.99 mole

Now we will compare the moles of oxygen and water.

                  H₂O         :            O₂  

                    2            :              1

               0.996         :          0.996

Volume of oxygen needed:

PV = nRT

V = nRT/P

V = 0.996 mol × 0.0821 atm.L/mol.K ×  273.15 K / 1 atm

V = 22.34 L

3 0
3 years ago
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Lena [83]

<em>Answer: </em>D

<em>Explanation:</em>

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3 0
2 years ago
What do the elements Nickel and Technetium have in common?
nalin [4]

Answer:

nickel and Technetium are both solids

Explanation:

3 0
3 years ago
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