Rutherford's experiment showed that Atoms have protons in the nucleus. The reason is because his alpha particles (two protons & two neutrons with no electrons), when striking an atom, either went straight through, or bounced off at a large angle.
When finding this, I believe your answer would be D, the last one.
Answer:
a. P=188mmHg
Explanation:
A gas undergoing a change of volume and pressure at constant temperature (and not changing the number of molecules), follows Boyle's Law: 
The units of these quantities can be any measure of pressure and volume, so long as long as the units are the same between beginning and ending conditions.
Substitute and solve:
![(685[mmHg])(131[mL])=P_2(478[mL])](https://tex.z-dn.net/?f=%28685%5BmmHg%5D%29%28131%5BmL%5D%29%3DP_2%28478%5BmL%5D%29)
![\dfrac{(685[mmHg])(131[mL\!\!\!\!\!\!\!\!\!{--}])}{478[mL\!\!\!\!\!\!\!\!\!{--}]}=\dfrac{P_2(478[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----})}{478[mL] \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----}}](https://tex.z-dn.net/?f=%5Cdfrac%7B%28685%5BmmHg%5D%29%28131%5BmL%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%7B--%7D%5D%29%7D%7B478%5BmL%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%7B--%7D%5D%7D%3D%5Cdfrac%7BP_2%28478%5BmL%5D%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%7B----%7D%29%7D%7B478%5BmL%5D%20%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%5C%21%7B----%7D%7D)
![187.730125523[mmHg]=P_2](https://tex.z-dn.net/?f=187.730125523%5BmmHg%5D%3DP_2)
Accounting for significant figures, ![P_2=188[mmHg]](https://tex.z-dn.net/?f=P_2%3D188%5BmmHg%5D)
Answer:
= 82%
Explanation:
Percentage purity is calculated by the formula;
% purity = (mass of pure chemical/total mass of sample) × 100
In this case;
1 mole of Ca(NO3)2 = 164 g
but; 164 g of Ca(NO3)2 = 40 g Ca
Therefore; mass of Ca(NO3)2 = 164 /40
= 4.1 g
Thus;
% purity of Ca(NO3)2 = (Mass of Ca(NO3)2/ mass of the sample)× 100
= (4.1 g/ 5 g) × 100
= 82%
Answer:
Hello! <em>Jaesuk~Sakai Here!! UwU</em>
Explanation:
<em>my fav cod map, is the one with the deck near the ocean ^^</em>
<em>ps: u do know which one i'm talking about, right? </em>
<em />
<em>pls help me out if u know wat map i'm talking about so i can edit this answer for u ^^</em>
Answer:
Explanation:
Matter is anything that has weight and occupies space.
To prove that a bicycle is a matter, we need to show that it has weight and will occupy space.
When you put the bicycle on a weighing scale, you will see the weight of the bicycle. This a proof that bicycle is a matter.
To show that the bicycle can occupy space, place the device in a tank full of water. From the tank, the bicycle will displace some water. Substances that cannot occupy space will not behave in such manner.
