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saw5 [17]
4 years ago
5

Please help i’ve been stuck in this for a while

Chemistry
2 answers:
d1i1m1o1n [39]4 years ago
4 0
The answer is bbbbbbbbb
RideAnS [48]4 years ago
3 0

Answer:

Explanation:

I got you....so equilibrium constant is written as products/reactants with raising the products and reactants to appropriate powers based on leading coefficients.

For eg: A+2B------->2C+3D  

Keq for this is products/reactions i.e. [(C)^2 (D)^3]/[(A) (B)^2]  you see we raised each product or reactant for leading coefficient (the number in balanced equation) power.

In the question above.....

The keq would thus be \frac{[H2O] [CO]}{[H2][CO2]}   therefore answer is B

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The continents are made up of mostly what type of rock
raketka [301]
Granite and basalt is the answer
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3 0
4 years ago
Read 2 more answers
The combustion of a sample of butane, C4H10 (lighter fluid), produced 2.46 grams of water.
avanturin [10]

a. 0.137

b. 0.0274

c. 1.5892 g

d. 0.1781

e. 5.6992 g

<h3>Further explanation</h3>

Given

Reaction

2 C4H10 + 13O2 -------> 8CO2 + 10H2O

2.46 g of water

Required

moles and mass

Solution

a. moles of water :

2.46 g : 18 g/mol = 0.137

b. moles of butane :

= 2/10 x mol water

= 2/10 x 0.137

= 0.0274

c. mass of butane :

= 0.0274 x 58 g/mol

= 1.5892 g

d. moles of oxygen :

= 13/2 x mol butane

= 13/2 x 0.0274

= 0.1781

e. mass of oxygen :

= 0.1781 x 32 g/mol

= 5.6992 g

6 0
3 years ago
When a customer begins choking you should administer CPR.<br> True<br> False
yuradex [85]

Answer:

True

Explanation:

That's my answer :)

3 0
3 years ago
Read 2 more answers
In which species does nitrogen have an oxidation number of zero?
VARVARA [1.3K]
The most common species of nitrogen in which its oxidation state is zero is the diatomic nitrogen (N_{2}). This is because the oxidation number of pure elements (whether alone as an atom or combined with other atoms of the same element such as the diatomic nitrogen) is always zero. 

In addition to diatomic nitrogen, there are diazonium (R-N_{2}^{+}) compounds where nitrogen has an oxidation number of zero.
4 0
4 years ago
For the reaction IO3–(aq) + 5 I–(aq) + 6 H+(aq) → 3 I2(aq) + 3 H2O(l) the rate of disappearance of I–(aq) at a particular time a
scoray [572]

Answer: The rate of appearance of I_2(aq) is 1.44\times 10^{-3}mol/Ls

Explanation:

Rate of a reaction is defined as the rate of change of concentration per unit time.

Thus for reaction:

IO_3^-(aq)+5I^-(aq)+6H^+(aq)\rightarrow 3I_2(aq)+3H_2O(l)

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

Rate=-\frac{1d[I^-]}{5dt}=+\frac{d[I_2]}{3dt}

Given: -\frac{d[I^-]}{dt}] = 2.4\times 10^{-3}mol/Ls

+\frac{d[I_2]}{dt}=-\frac{3d[I^-]}{5dt}=-\frac{3}{5}\times 2.4\times 10^{-3}mol/Ls=1.44\times 10^{-3}mol/Ls

The rate of appearance of I_2(aq) is 1.44\times 10^{-3}mol/Ls

6 0
3 years ago
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