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kow [346]
3 years ago
12

Which examples would be found in Earth's biosphere? Check all that apply.

Chemistry
1 answer:
umka21 [38]3 years ago
8 0
Ponds and gases would not be apart of the biosphere
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A 225-g sample of aluminum was heated to 125.5 oc, then placed into 500.0 g water at 22.5 oc. (the specific heat of aluminum is
Sidana [21]
when  heat gained = heat lost 

when AL is lost heat and water gain heat

∴ (M*C*ΔT)AL = (M*C*ΔT) water

when M(Al) is the mass of Al= 225g 

C(Al) is the specific heat of Al = 0.9 

ΔT(Al) = (125.5 - Tf) 

and Mw is mass of water  = 500g

Cw is the specific heat of water = 4.81 

ΔT = (Tf - 22.5) 

so by substitution:

∴225* 0.9 * ( 125.5 - Tf) = 500 * 4.81 * (Tf-22.5)

∴Tf = 30.5 °C
7 0
3 years ago
Read 2 more answers
Which of the following best describes what happens when molecular compounds melt? A.) Molecules separate into their component at
Semenov [28]
I think the correct answer from the choices listed above is option D. When a molecular compound melts, they undergo the process of phase change from solid to liquid therefore m<span>olecules arranged in a regular pattern change to an irregular pattern. Hope this answers the question.</span>
3 0
3 years ago
An alloy is a mixture that has
defon

Answer:

an alloy is a mixture of elements that has metallic properties

Explanation:

8 0
2 years ago
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How many grams of a 32.9% potassium sulfate solution would contain 181.6 g potassium
Anna007 [38]

Answer:

grams of solution = 551.98 g

Explanation:

Given data:

Percentage of solution = 32.9

Mass of solute = 181.6 g

Grams of solvent = ?

Solution:

Formula:

%  = [grams of solute / grams of solution] × 100

Now we will put the values in formula.

32.9 = [ 181.6 g / grams of solution] × 100

grams of solution = 181.6 g × 100 / 32.9

grams of solution = 18160 g /32.9

grams of solution = 551.98 g

8 0
3 years ago
The difenition for glands
mamaluj [8]

A gland is an organ that excretes chemical fluids to discharge into the surroundings or for use in the body.

4 0
3 years ago
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