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larisa [96]
3 years ago
9

To objects (A and B) of the same temperature are in contact with each other? Which statement is true.

Chemistry
2 answers:
kolezko [41]3 years ago
7 0
Answer is a heat transfers from object a
denpristay [2]3 years ago
5 0
Que pa’so thosui? Esta bious classa?
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Find the percentage composition of each element in the compound having 9.8 g of nitrogen 0.7 g of hydrogen and 33.6 g of oxygen
Rainbow [258]

Answer:

Search Results

Empirical formula of carbon hydrogen and nitrogen

Nitrogen usually forms three bonds one to Carbon and 2 to Hydrogen atoms. Carbon usually forms four bonds one to Nitrogen and 3 to Hydrogen atoms. The empirical formula is CH5N .

Explanation:

4 0
4 years ago
How many grams of iron (Fe) will be produced if you start with 3.65 liters of carbon monoxide gas (CO) at STP?
iogann1982 [59]
The balanced equation for the above reaction is as follows;
<span>Fe</span>₂<span>O</span>₃<span> + 3 CO --> 2 Fe + 3 CO</span>₂
<span>stoichiometry of CO to Fe is 3:2
molar volume states that 1 mol of any gas occupies a volume of 22.4 L
If 22.4 L contains 1 mol of CO
Then 3.65 L contains - 1/22.4 x 3.65 = 0.16 mol 
3 mol of CO forms 2 mol of Fe
Then 0.16 mol of CO forms - 2/3 x 0.16 = 0.1067 mol of Fe
Therefore mass of Fe produced - 0.1067 mol x 55.8 g/mol = 5.95 g</span>
5 0
4 years ago
Looking at the forward reaction, at what rate is equilibrium reached?
Jlenok [28]
At 1.0 mol/min my teacher told me when I asked her yuh
5 0
3 years ago
For the reaction, a → b, the rate constant is 0.0208 m-1 sec-1. How long would it take for [a] to decrease from 0.100 to 0.0450
goldfiish [28.3K]

First, assume the order of the given reaction is n, then the rate of reaction i.e. \frac{dx}{dt}=k\times[A]^{n}

where, dx is change in concentration of A in small time interval dt and k is rate constant.

According to units of rate constant, the reaction is of second order.

\frac{1}{[A]_{t}}-\frac{1}{[A]_{o}} = kt   (second order formula)

Put the values,

\frac{1}{0.04590 m}-\frac{1}{0.100 m} =0.0208 m^{-1}s^{-1} \times t  

 22.23 m -10 m =0.0208 m^{-1}s^{-1} \times t

\frac{12.23 m}{0.0208 m^{-1}s^{-1}} = t

t= 587.9 s

Hence, time taken is 587.9 s






5 0
3 years ago
What substance makes the earths crust
EastWind [94]
The elements oxygen and silicon make up most of the Earth's crust including silicate minerals such as quartz and feldspar
8 0
3 years ago
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