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balu736 [363]
3 years ago
13

Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas as seen in the chemical equations below:

Chemistry
1 answer:
Sever21 [200]3 years ago
8 0

Answer:

Single Replacement.

Explanation:

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A point has no demension.​
Natalka [10]

Answer:

A point is a 0-D object, infinitely small.

Explanation:

6 0
3 years ago
What is 0.00034 in exponential form
Verizon [17]

Answer:

3.4  ×  10 ^− 4

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

7 0
3 years ago
A postulate of the kinetic molecular theory is listed.
valina [46]

Answer:

Postulate: Gas particles are extremely small and are far apart.

The activities can be used to demonstrate the postulate is :

<u>Observing colored gas spreading into an inverted jar placed on top of a jar containing the gas</u>

<u />

Explanation:

colored gas spreading into an inverted jar placed on top of a jar containing the gas:

This occur because of two reasons:

1. <em><u>The Gaseous particles are largely spaced . There is large distance between the gases molecule</u></em>

<em><u>2. The gases are in continuous motion . Hence they posses very high kinetic energy . This is the reason they mixes quickly if placed in a jar.</u></em>

<em><u>This occur by the process of diffusion. </u></em>

Diffusion of Gases: The intermixing of particles from the region of high concentration to low concentration.

The coloured gas goes into the space between the gaseous molecule present in the jar.(Gases are far apart)

As soon as the coloured gas is mixed in the jar , It spread quickly by diffusion because , The gaseous particles are extremely small and are far apart.

5 0
4 years ago
Use the reaction shown l to answer these questions.
Varvara68 [4.7K]

Answer:

16.8dm3

Explanation:

2 moles of CO gives 1 mole of N2

2 moles of CO= 2* 28= 56g

1 mole of N2 = 1* 22.4dm

56g of CO gives 22.4dm3 of N2

42.7 of CO will give> (42.7*22.4)/56

=16.8dm3

8 0
3 years ago
A sample of n2 occupies 3. 0l at 3. 0atm. What volume will it occupy when the pressure is changed to 0. 5atm and the temperature
belka [17]

It will occupy 18 L volume when the pressure is changed to 0. 5 atm and the temperature remain constant.

Calculation,

According to Boyle law, the pressure of a given quantity of gas varies inversely with its volume at constant temperature.

P_{1} V _{1} = k    .....(i)

  • P_{1} is initial pressure = 3 atm
  • V _{1} is initial volume = 3L
  • k is constant

P_{2} V _{2} = k    (ii)

  • P_{2} is final pressure = ?
  • V _{2} is final volume = 0.5atm
  • k is constant

Combining equation (i) and (ii). we get,

P_{1} V _{1}  = P_{2} V _{2}

3 atm× 3L=  V _{2}× 0.5atm

V _{2}  =   3 atm× 3L/0.5atm = 18 L

Boyle law used during respiration or breathing.

To Learn more about Boyle law

brainly.com/question/1437490

#SPJ4

7 0
2 years ago
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