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sattari [20]
3 years ago
6

A molecule has two hydrogen atoms, one carbon atom and three oxygen atoms.

Chemistry
2 answers:
IceJOKER [234]3 years ago
7 0

Answer:

C.

Explanation:

Marianna [84]3 years ago
7 0

Answer:

actually its d

Explanation:

J

J h2co3

two hydrogen(H2)

1 carbon (C)

3 oxygen (o3)

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The Following questions pertain to a 2.2M solution of hydrocyanic acid at 25°C. pKa = 9.21 at 25°C. Find the concentrations of a
horsena [70]
1) Chemical reaction: HCN + H₂O → CN⁻ + H₃O⁺.
c(HCN) = 2,2 M = 2,2 mol/L.
pKa(HCN) = 9,21.
Ka = 6,16·10⁻¹⁰.
[CN⁻] = [H₃O⁺] = x.
[HCN<span>] = 2,2 M - x.
</span>Ka = [CN⁻] · [H₃O⁺] / [HCN].
6,16·10⁻¹⁰ = x² / 2,2 M -x.
Solve quadratic equation: [CN⁻] = [H₃O⁺] = 0,0000346 M.
[HCN] = 2,2 M - 0,0000346 M = 2,199 M.

2) pH = - log[H₃O⁺].
pH = -log( 0,0000346 M).
pH = 4,46.
Hydrocyanic acid and hydronium ion (H₃O⁺) are acids. Cyanide anion (CN⁻) is the strongest base in the system, cyanide anion accept protons in chemical reaction.
pKb = pKw - pKa.
pKb = 14 - 9,21 = 4,79.

6 0
3 years ago
Given the density of iron (Fe) is 7.87 g/cm3, determine the mass of iron (in grams) in a rectangle block with the dimensions of
guapka [62]

Answer:

m=14,105.71 g Fe

Explanation:

Hello,

In this case, the first step is to compute the volume of the block considering the length, height and width:

V=L \times W \times H =12.5 in\times 3.50 in \times 2.50 in =109.375 in^3

Then, we compute the volume in cubic centimetres:

V=109.375in^3\times \frac{16.3871 cm^3}{1in^3} =1792.34cm^3

Finally, as the density is given by:

\rho =\frac{m}{V}

We solve for the mass:

m=\rho \times V= 7.87\frac{g}{cm^3} \times 1792.34 cm^3\\\\m=14,105.71 g Fe

Best regards.

8 0
3 years ago
What is the balance of C6H5Cl + O2 → CO + 2H2O + HCl
valina [46]
<span>C6H5CL + 4O2 = 6CO + 2H2O + HCL
</span>Hope this helps
5 0
3 years ago
Which substances exhibit only London forces ?? He,H2O,HCl, Cl2
azamat

Answer:

I think it will be He, and Cl2

8 0
4 years ago
Read 2 more answers
What is an orbital shell
Lyrx [107]
<span>orbital shell is the</span><span> the circular paths around the nucleus of an atom along which the electrons traverse.</span>
4 0
3 years ago
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