It is D.....i took the test and got it right!!!!!!!
Explanation:
It is known that relation between heat energy, mass and temperature change is as follows.
q = 
where, C = specific heat of water (in given case) = 4.184 
m = mass
= change in temperature
Therefore, calculate the heat energy as follows.
q = 
=
= 1255.2 kJ/day
For 10 days, total heat required is as follows.

= 12552 kJ
It is known that the value of standard enthalpy of combustion of butane is -49.5 kJ/g.
Therefore, combustion of 1 gm of butane will be 49.5 kJ. Hence, total amount of butane required will be as follows.

= 253.57 g
As it is given that 1 canister of butane contains 75 g butane. Hence, no. of canisters required are as follows.
No. of canisters required =
= 3.38
= 4 (approximately)
Thus, we can conclude that minimum number of fuel canisters you must bring are 4.
1. True
2. 3.5 miles northwest
When a substance goes from 1 state of matter to a another state of matter, the process is a change of state. What i found out is that it can be heated, whenever the substance goes to another phase i mostly heard, and reasearched that it goes to heated.
<h3>
Answer:</h3>
The concentration of the diluted salt solution decreased
<h3>
Explanation:</h3>
When a solution is diluted the concentration of then solution decreases and the volume of the solvent increases.
In this case;
The initial concentration is 0.50 M
The initial volume is 10.0 mL
The volume after dilution is 100 mL
We are required to determine the change in the final concentration;
According to the dilution equation;
M1V1 = M2V2
M2 = M1V1 ÷ V2
Therefore;
M2 = (0.5 M × 10.0 mL) ÷ 100mL
= 0.05 M
Therefore, the concentration of the solution decreased after dilution.