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allochka39001 [22]
3 years ago
12

A ball is launched from a spring on the floor with an initial velocity of 32 m/s. it then comes to a stop in 4.3 seconds. Determ

ine the acceleration of the ball.
Chemistry
1 answer:
monitta3 years ago
3 0

Answer:

-7.4m/s2

Explanation:

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Construct a three-step synthesis of trans-2-pentene from acetylene by dragging the appropriate formulas into the bins. Note that
adelina 88 [10]

Answer:

The three-step synthesis of trans-2-pentene from acetylene is as follows.

<u>Step -1:</u> Formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkanes.

<u>Step -2:</u> Formation terminal alkyne to nonterminal alkynes.

<u>Step -3:</u> Formation of trans-pent - 2-pent-ene by reduction.

Explanation:

Synthesis of trans-pent-2-yne from ethyne takes place is mainly a three step synthesis which involves formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkane. Second step involves the further alkylation of terminal alkynes to higher order nonterminal alkynes and the third step involves the formation of trans-2-ene by dissolving reduction method.

The chemical reaction of each step of chemical reactions is as follows.

8 0
3 years ago
The distance from the sun to the earth would be which phrase best completes the sentence
Neporo4naja [7]

Answer:

The distance from Earth to the sun is called an astronomical unit, or AU, which is used to measure distances throughout the solar system.

6 0
3 years ago
Potassium has a mass number of 40 and an atomic number of 19. how many protons does it have?
ratelena [41]
19. The atomic number is the same as protons and electrons unless it have a - or a + charge the electrons are going to change
6 0
3 years ago
What is the Molarity of a Ca(OH)2 solution if 30.0mL of the solution is neutralized by 26.4mL of 0.25M HCI
ale4655 [162]

Answer:

0.11M

Explanation:

What is the Molarity of a Ca(OH)2 solution if 30.0mL of

the solution is neutralized by 26.4mL of 0.25M HCI solution?

1L (1000 ml) of the HCl contains 0.25 moles of H ion

26.4 ml contains ( 26.4 X0.25/1000) moles of H ion ion

=0.0066 moles H ion

2HCl +Ca (OH)2-----> 2H2O +CaCl2

SO 2 H IONS NEUTRALIZE 1 Ca(OH)2 MOLECULE

00066 moles H ion neutralize 0.0033 moles Ca(OH)2

the 0.0033 moles are distributed over 30 ml, so the concentration of the

Ca(OH)2 IS 0,0033/(30/1000) =0.11 moles/liter or 0.11M

3 0
3 years ago
What elements are made from the body
Iteru [2.4K]

Answer:

hydrogen oxygen carbon and nitrogen

6 0
3 years ago
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