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ycow [4]
4 years ago
14

Which of the following methods separates a homogeneous solution by spinning the solution very fast?

Chemistry
1 answer:
leonid [27]4 years ago
7 0

Answer:

d

Explanation:

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Calcium carbonate decomposes according to the following equation:
Bad White [126]

Answer:

CaCO3----------CaO+CO2

(40g+12g+16g×3) of CaCO3 produce (40g+16g) of CaO

100g of CaCO3 -----------------56g of CaO

20g of CaCO3-------------------x grams of CaO

x=(20g×56g)÷100g

x=1120gg÷100g

x=11.2g of CaO

Therefore, 11.2grams of CaO from 20grams of CaCO3

HOPE IT HELPED, PLEASE MARK BRAINLIEST

8 0
2 years ago
What is the name of the instrument used to measure the pressure of a contained gas? *
Natasha_Volkova [10]

Answer:Barometer :

Barometer is a scientific device. It is used to measure air pressure in environment. Air pressure changes with distance upper and bottom sea level.

Barometer is also used for measure altitude.

Barometric pressure has main effects on water and atmosphere conditions.

Hence, Barometer is used to measure air pressure.

Explanation:

3 0
3 years ago
suppose you mix 100.0 g of water at 22.6 oc with 75.0 g of water at 75.4 oc. what will be the final temperature of the mixed wat
Arada [10]

The temperature of mixed water is 45.230C under the conditions stated.

<h3>How can the change in temperature when mixing water be calculated?</h3>

T(final) = (m1 T1 + m2 T2) / (m1 + m2), at which m1 and m2 are indeed the weight training of the water in the initial and 2nd canisters, T1 is the water temperature in the first container, and T2 is the water temperature in the second container, can be used to determine the final the water's temperature mixture.

<h3>Briefing:</h3>

The given parameters;

mass of the cold water, m = 100 g

initial temperature of the water, t₁ = 22.6 ⁰C

initial temperature of the hot water, t₂ = 75.4⁰ C

75 g is the hot water's mass.

specific heat capacity of water is 4.184 J/g⁰C

The mixture's final temperature is estimated as follows;

Based on the principle of conservation of energy;

Heat received by the ice water equals heat lost by the hot water.

mcΔθ₂ = mcΔθ₁

75 x 4.184 x (75.4 - T) = 100 x 4.184 x (T - 22.6)

75 x (75.4 - T) = 100 x (T - 22.6)

(75.4 - T) = 1.333(T - 22.6)

75.4 - T = 1.333T - 30.1258

75.4 + 30.1258 = 1.333T + T

105.5258 = 2.333T

T = 45.2318⁰C

To know more about temperature visit :

brainly.com/question/29386637

#SPJ4

5 0
1 year ago
What role does weathering have in shaping Earth’s surface?
erma4kov [3.2K]

The answer is C because material is worn away because of weathering>

8 0
3 years ago
Read 2 more answers
A tetrahedral site in a close-packed lattice is formed by four spheres at the corners of a regular tetrahedron. This is equivale
Grace [21]

Answer:

Now length of body diagonal of this cube = √3×√2×r =2.45r

Explanation:

a) length of body diagonal of this cube = √3×√2×r = 2.45 r

it can solved as following

length of body diagonal = √3a   (where a is edge length of cube)

length of face diagonal = √2a

But length of face diagonal = 2r

Therefore a = 2r /√2  = √2×r

Now length of body diagonal of this cube = √3×√2×r

6 0
3 years ago
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