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Mnenie [13.5K]
3 years ago
12

The chemical formula of lead sulfide tells you that it contains​

Chemistry
1 answer:
ra1l [238]3 years ago
7 0

Answer:

sulfur oxygen

Explanation:

because its contain ide

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How does an atom become an atom of another element is
ivann1987 [24]
Can you give me the anwsers

3 0
3 years ago
Calculate the ph of a 0.25M solution of monochloroacetic acid at 25 c
Phoenix [80]
<h3>Answer: <em>pH=2.25 </em></h3>

Explanation:

monochloroacetic acid  also means: chloroacetic acid

pKa of monochloroacetic acid= 1.4 x 10^-3  (I believe this should have been given in the problem or perhaps in the textbook)

Formula: pH= pKa + log ( some number in M)

pH= -log (1.4 x 10^-3) + log (0.25M)= 2.85 + -0.602= 2.25

pH= 2.25  

8 0
3 years ago
Will give brainliest if you answer quickly and correctly :)
AnnZ [28]
I think it’s I
Iodine has 53 protons and 74 neutrons
3 0
2 years ago
Read 2 more answers
The position of the equilibrium for a system where K = 6.4 × 10 9 can be described as being favoring ________________
geniusboy [140]

Answer:

to the right (products side)

Explanation:

The equilibrium constant K describes the ratio between the concentration of products and reactants at equilibrium. For a general reaction:

a A + b B → c C + d D

The equilibrium constant expression is:

K = \frac{[C]^{c} [D]^{d}  }{[A]^{a} [B]^{b}  }

A low value of K indicates that the concentration of products (C and D) is low in relation with the concentration of reactants (A and B).

Conversely, a high value of K indicated that the concentration of products is high compared with the concentration of reactants.

Since K = 6.4 × 10⁹ is a high value, the concentration of products is higher than the concentration of reactants at equilibrium. Thus, the position of the equilibrium is favored to the right.

5 0
3 years ago
A gas occupies a volume of 0.2 L at 176 mm Hg. What volume will the gas occupy at 760 mm Hg?
nignag [31]

Answer:

V_2=0.046L

Explanation:

Hello,

In this case, we apply the Boyle's law as an inversely proportional relationship allowing us to understand the pressure-volume behavior as shown below:

P_1V_1=P_2V_2

In such a way, solving for the final volume V2, we obtain:

V_2=\frac{P_1V_1}{P_2}=\frac{0.2L*176mmHg}{760mmHg}  \\\\V_2=0.046L

Best regards.

8 0
3 years ago
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