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77julia77 [94]
3 years ago
6

Which real world scensories below respent physical changes check all that apply

Chemistry
1 answer:
Delicious77 [7]3 years ago
4 0

Answer:

I need more information

Explanation:

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Question 1 (1 point)<br> How many significant figures are in the number 2,000 ?
Flauer [41]

Answer:

One  

Explanation:

Trailing zeros in a number are not significant unless they follow a decimal point.

If you want to specify a different number of significant figures, you can use a decimal point.

For example,

     2.0 × 10³ = two significant figures

  2.00 × 10³ = three significant figures

2.000 × 10³ = four significant figure

        2000. = four significant figures

5 0
3 years ago
Which of the following weathering processes involves the constant freezing and thawing of water?
Artemon [7]

Frost wedging

Explanation:

Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.

Some agents of weathering are wind, water, glacier and gravity.

  • In physical weathering, rocks are broken down mechanically into smaller bit.
  • Freezing and thawing allows for the propagation of physical weathering.
  • Water within cracks will expand when they freeze significantly.
  • This will further expand and widen the cracks.
  • When the ice thaws the stress is relieved.
  • When the process continues on and on over the year, a rock will eventually break down.
  • This is common around the temperate and polar regions.

Learn more:

weathering brainly.com/question/876569

#learnwithBrainly

4 0
3 years ago
If 5.00lb of potatoes cost $3.60,how much would 1.30kg of potatoes cost?
Nana76 [90]

Answer:

the correct answer is $2.06

Explanation:

<em>hope</em><em> </em><em>it'll</em><em> </em><em>help you</em><em>.</em><em>.</em><em>.</em>

6 0
2 years ago
The formula for zirconium(VI) dichromate
Iteru [2.4K]

Answer:

Zr(Cr2O7)2

Explanation:

7 0
3 years ago
How does the vapor pressure of water at 10°C compared with its vapor pressure at 50°C ?​
Sliva [168]

Answer: The vapor pressure of water at 10°C will be less as compared with its vapor pressure at 50°C.

Explanation:

Vapor pressure of a liquid  is defined as the pressure exerted by the vapors  in equilibrium with the liquid/solution at a particular temperature.

As Kinetic energy is dependent on the absolute temperature of the gas.

K.E=\frac{3}{2}RT

where R = gas constant

T = temperature

On increase in temperature, the kinetic energy of the molecules increase and thus more liquid molecules can escape to form vapours and thus will exert more vapor pressure.

Thus the vapor pressure of water at 10°C will be less as compared with its vapor pressure at 50°C.

4 0
3 years ago
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