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Svet_ta [14]
3 years ago
9

Please help.. match the letter with the statements below?!

Chemistry
2 answers:
FinnZ [79.3K]3 years ago
7 0
1 B
2 D
3 E
4 A
5 C

There
pashok25 [27]3 years ago
3 0
1. Experimental Variable, B
2. Controlled conditions, D
3. Experimental group, E
4. Controlled group, A
5. Data, C

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I have a question can someone answer these questions for me please?
Kitty [74]
1. C
2. E
3. A
4. B
5. D
I hope that helps <3
8 0
2 years ago
What is meant by polar molecule?
Lostsunrise [7]
A polar molecule<span> has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from </span>polar<span> bonds arranged asymmetrically. Water (H</span>2<span>O) is an example of a </span>polar molecule<span> since it has a slight positive charge on one side and a slight negative charge on the other.</span>
3 0
3 years ago
A 825 g iron block is heated to 352 degrees C and is placed in an insulated container (of negligible heat capacity) containing 4
Stella [2.4K]

Answer : The final equilibrium temperature of the water and iron is, 537.12 K

Explanation :

In this problem we assumed that 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 =  560 J/(kg.K)

c_1 = specific heat of water = 4186 J/(kg.K)

m_1 = mass of iron = 825 g

m_2 = mass of water = 40 g

T_f = final temperature of water and iron = ?

T_1 = initial temperature of iron = 352^oC=273+352=625K

T_2 = initial temperature of water = 20^oC=273+20=293K

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

(825\times 10^{-3}kg)\times 560J/(kg.K)\times (T_f-625K)=-(40\times 10^{-3}kg)\times 4186J/(kg.K)\times (T_f-293K)

T_f=537.12K

Therefore, the final equilibrium temperature of the water and iron is, 537.12 K

8 0
3 years ago
Select all that apply. which of the following are density labels? kg/l g/m g/ml cm^3/g
Strike441 [17]
I would say that only the only density label is cm^3/g
4 0
3 years ago
Read 2 more answers
.
Debora [2.8K]

Explanation:

Their force of attraction is strongest in the middle of the magnet.

4 0
2 years ago
Read 2 more answers
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