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Gnoma [55]
3 years ago
10

What is a substance?

Chemistry
1 answer:
ANTONII [103]3 years ago
5 0
A is the answer im pretty sure
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[Then mother noticed that two children who are watching the game are sick and coughing.She told her son to keep distance from th
Andrew [12]

Answer:

in illustration 1

the mother told her son not to play with the boy having cough because it is a transferable disease which could cause him also to get sick and would get cough.

while in

illustration 2

the mother let the boy play with the boy having asthma because it is not a transferable disease which wold not affect him or any one else.

Explanation:

this is the reason

7 0
2 years ago
Read 2 more answers
To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions, and the reaction chamber
Alekssandra [29.7K]

Answer:

1.3 × 10³ cm³

Explanation:

The gas occupies a volume of V₁ = 310 cm³ under standard temperature and pressure (STP), that is, T₁ = 273.15 K and P₁ = 1.0 atm. In order to find the volume V₂ under different conditions we can use the combined gas law formula.

\frac{P_{1}.V_{1}}{T_{1}} =\frac{P_{2}.V_{2}}{T_{2}} \\V_{2}=\frac{P_{1}.V_{1}.T_{2}}{T_{1}.P_{2}}=\frac{1.0atm\times 310cm^{3} \times 2473K }{273.15K \times 2.1atm} =1.3 \times 10^{3} cm^{3}

7 0
3 years ago
Draw the structure for the ring compounds with formulas C6H12 and C6H6
GenaCL600 [577]
The first compound C6H12 is cyclohexane and the other compound C6H6 is benzene. They are both aromatic compounds. Cyclohexane does not have double bonds in its ring while benzene has three double bonds in its ring. This is why the formula for cyclohexane contains 12 carbon atoms while benzene only has 6. 
5 0
3 years ago
(ill give brainliest)
gizmo_the_mogwai [7]

Answer:

It is because the object that is charged attracts the uncharged because it is giving electrons and passing it on to the object. As shown in the image the balloon is attracting the paper that is not charged. Actually telling,the charged object will cause the uncharged object to become charged, with a positive charge on one side and a negative charge on the other side. This process is called induction.

Explanation: Pls Mark Brainliest

4 0
2 years ago
5. What happens to the average kinetic energy of water molecules as water freezeslt decreases as the water absorbs energy from i
4vir4ik [10]
The correct answer among the choices listed above is option D. The average kinetic energy of water molecules as water freeze <span>decreases as water releases energy to its surroundings. Energy is released as the molecules go into a more condensed phase which is the solid.</span>
3 0
3 years ago
Read 2 more answers
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