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3 years ago

9

So anyone know the answer to this

1 answer:

abruzzese [7]3 years ago

4 0

Answer:

Exosphere

Explanation:

it’s the furthest away from the earths surfest which would make it furthest away from earths center.

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A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin

lorasvet [3.4K]

Answer : The mass of the water in two significant figures is, $3.0\times 10^1g$

Explanation :

In this case the heat given by the hot body is equal to the heat taken by the cold body.

$q_1=-q_2$

$m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)$

where,

$c_1$ = specific heat of iron metal = $0.45J/g^oC$

$c_2$ = specific heat of water = $4.18J/g^oC$

$m_1$ = mass of iron metal = 32.3 g

$m_2$ = mass of water = ?

$T_f$ = final temperature of mixture = $59.2^oC$

$T_1$ = initial temperature of iron metal = $21.9^oC$

$T_2$ = initial temperature of water = $63.5^oC$

Now put all the given values in the above formula, we get

$32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC$

$m_2=30.16g\approx 3.0\times 10^1g$

Therefore, the mass of the water in two significant figures is, $3.0\times 10^1g$

3 0

3 years ago

Multiple Choice Question

valina [46]

Answer:

Explanation:

i would say not d im not fully sure but id say c

6 0

3 years ago

Salt water has a greater density than fresh water. If an egg sinks to the bottom in a container of fresh water, what can you do

Klio2033 [76]

<span>C.) add salt to the fresh water

if an egg sinks to the bottom in a container of fresh water, you can add salt to the fresh water to make the egg float.</span>

5 0

3 years ago

How can you get the knowledge of minerals chemical makeup or use?

Gre4nikov [31]

A. To determine how to break down minerals

7 0

3 years ago

A solution is made by dissolving 20 ml of acetic acid in 180ml of water. Calculate its volume concentration

inn [45]

Answer:

water is 9/10

chemical would be 1/10

Explanation:

180/200 would be water concentration in solution

and 20/200 would be chemical solution concentration in solution (if the chemical were to be polar and mix)

8 0

3 years ago