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natka813 [3]
3 years ago
13

If a sample of Fe2O3, (rust) contains 30.00g of iron, how many grams of oxygen should it have?

Chemistry
1 answer:
bixtya [17]3 years ago
7 0
Where are the answer choices
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A 150 mL of oxygen gas is collected over water at 20 °C and 758 torr. What volume will the same sample of oxygen occupy at STP w
Stella [2.4K]

Answer:

The volume would be; 136.17 ml

Explanation:

Volume V1 = 150 mL

Temperature T1 = 20°C + 273 = 293 K

Pressure  P1 = 758 - 17.54 = 740.46 torr

At STP;

Volume V2 = ?

Pressure P2 = 760 torr

Temperature T2 = 273 K

Using the general gas equation;

P1V1 / T1   = P2V2 / T2

Making V2 subject of formulae;

V2 = P1V1T2 / T1P2

Inserting the values we have;

V2 = 740.46 * 150 * 273  /  293 * 760

V2 = 136.17 ml

3 0
3 years ago
The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occu
julia-pushkina [17]

Answer:

When plants lose more water than they can take up from the soil, they become water stressed. ... Such drought conditions certainly inhibit the growth of plants. If it goes long enough without water it will die because the plant uses water for a lot of different jobs needed to keep the plant alive, so the long-term effect is that the plant will die if the drought continues.

Explanation:

8 0
4 years ago
Which has a higher vapor pressure hexane or nonane.
Margarita [4]
Hexane has a higher vapor pressure
3 0
2 years ago
If the principal quantum number is n = 3, what are the name(s) of the subshells?
Ede4ka [16]

The name(s) of the subshells are s,p and d

<h3>Further explanation</h3>

Each orbital in an atom consists of 4 quantum numbers  

n is the principal quantum number.  

l is the angular momentum / azimuthal quantum number  

ml, the magnetic quantum number  

ms, the electron-spin quantum number  

Value of n: positive integer  

value of l: s = 0, p = 1, d = 2, f = 3 , ..(n-1)

ml value: between -l to + l  

ms value: +1/2 or -1/2  

n=3, then the possible value of l is a maximum of n-1 = 3-1 = 2

So the value of subshells = 0,1 and 2

8 0
3 years ago
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Determine the enthalpy for the reaction A+B --&gt; C If we know the following:
PolarNik [594]

Explanation:

here is the answer to the question

7 0
3 years ago
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