H:O = 4:5;
(UO₂)₂ = 4 O atoms;
(PO₄)₂ = 8 O atoms:
8H₂O = 16 H atoms + 8 O atoms;
Total = 16 H atoms + 20 O atoms;
H:O = 16:20 = 4:5
Answer:
It’s basically molecular nitrogen.
Explanation:
Answer:
a. looks to be directly proportional because as one goes up, so does the other.
b. the pressure can be found from the line you create with the x and y values. the pressure will be less than 726 since you can see the values go down as temp goes down.
if that website calculator does not have an equation creator, you'd have to use excel to calculate pressure at 0°c, there's an excel function thst would estimate the value.
since it's a test, this was the fastest info I could gather.
The amount left after 20 years = 154.15 mg
<h3>Further explanation
</h3>
The atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.
Usually radioactive elements have an unstable atomic nucleus.
The main particles are emitted by radioactive elements so that they generally decay are alpha (α), beta (β) and gamma (γ) particles
The decay formula for isotope :
Then for t=20 years, the amount left :
Answer:
Chemical reaction involved is:
CaCO
3
→CaO+CO
2
Molar mass of CaCO
3
=40+12+16×3=100 g
According to the balanced reaction 100 g of CaCO
3
produces 1 mol of CO
2
i.e. 22.4 L at STP.
∴50 g CaCO
3
will produce
100
22.4
×50=11.2 L CO
2
at STP.
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