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ahrayia [7]
3 years ago
10

if a and b are directly proportional and the value of a becomes 1/4 as much ,what happens to the value of b

Chemistry
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

Becomes 1/4 as much

Explanation:

If a and b are directly proportional, this means we may write an equality between them if some proportionality constant, k, is included, so that:

a=kb

The equation shows that:

k=\frac{a}{b}

And since k is a constant, this would imply that increasing a by some fraction would also require b to increase by the same fraction.

In the context of this problem, we're given that a becomes 1/4 as much, meaning b should also become 1/4 as much to keep the same proportionality constant, k.

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galben [10]

Answer:

One object has more mass than the other object

Pls mark as brainliest

5 0
3 years ago
Volume in liters of carbon dioxide produced at stp when 0.85 grams of butane reacts
MAVERICK [17]

Volume in liters of Carbon dioxide : 0.672

<h3>Further explanation</h3>

Reaction(combustion of butane-C₄H₁₀)

2C₄H₁₀+13O₂⇒8CO₂+10H₂O

mol butane (MW=58,12 g/mol) :

\tt \dfrac{0.85}{58,12}=0.015

mol CO₂ : mol C₄H₁₀ = 8 : 4, so mol CO₂ :

\tt \dfrac{8}{4}\times 0.015=0.03

At STP, 1 mol = 22.4 L, so volume CO₂ :

\tt 0.03\times 22.4~L=0.672~L

3 0
3 years ago
At a certain temperature, the equilibrium constant, K c , for this reaction is 53.3. H 2 ( g ) + I 2 ( g ) − ⇀ ↽ − 2 HI ( g ) K
swat32

Answer:

[HI]_{eq}=0.942M

Explanation:

Hello,

In this case, the initial concentrations of hydrogen and iodine are the same:

[H_2]_0=[I_2]_0=0.600M

Thus, considering the given undergoing chemical reaction, one states the law of mass action in terms of the change x due to the chemical change as shown below:

Kc=\frac{(2x)^2}{(0.600M-x)(0.600M-x)}=53.3

Therefore, solving for x by quadratic equation one obtains:

x_1=0.471M;x_2=0.826M

Nevertheless, the feasible result is the first one as the second one results in negative concentrations, thus, the hydroiodic acid equilibrium concentration turns out:

[HI]_{eq}=2*0.471M=0.942M

Best regards.

8 0
3 years ago
Read 2 more answers
The atomic number is determined only by the number of ________ in the nucleus of an atom. But, in a neutral atom it also represe
sveticcg [70]

Hello!

The atomic number is determined only by the number of protons in the nucleus of an atom. But, in a neutral atom it also represents the number of electrons in the electron cloud.


Neutrons are only important in the nucleus for helping us find atomic weight, which varies as we move along the perodic table and does not always equal the same amount of it's atomic number. Which is why it would not be a suitable answer for the first blank space. Electrons do not work either as they do not exist inside the nucleus but rather outside the atom.

The second space, since it states is in the electron cloud, we can deduct that electrons would be an appropriate answer there.

If you need anymore help feel free to ask, but I hope this answers your question.

5 0
3 years ago
2.) Determine the concentration of citric acid if a 20.00 mL sample is titrated with 29.06 mL of
allsm [11]
The correct answer for this question is +3OH
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