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Zina [86]
2 years ago
13

Please Help Meeee. Best answer will get brainliest.

Chemistry
2 answers:
fiasKO [112]2 years ago
7 0

Answer:Yes I am very good at acid

Explanation:

Tanzania [10]2 years ago
4 0

Answer: I say  B

Explanation:

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Fe2(SO4)3 +__BaCl2 → __BaSO4 +_<br> FeCl3
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Fe2(SO4)3 + 3BaCl2 → 2FeCl3 + 3BaSO4

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2 years ago
I need more help with science again
Sloan [31]
Membranes are barriers and “gatekeepers”, they only let certain molecules pass through them.

they also transport nutrients to the cell
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3 years ago
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All organisms need glucose or a source of________ to carry out basic life functions
hichkok12 [17]

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chlorophyll

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3 years ago
Which do you think will cool down faster in? The teaspoon of water or the cup of water? Why?
777dan777 [17]

Answer:

I think the teaspoon will cool down faster.

Explanation:

The teaspoon of water will cool down faster because it is a smaller amount of water so the entire [drop] will absorb heat energy faster.

8 0
3 years ago
Calculate the pH for the following weak acid. A solution of HCOOH has 0.12M HCOOH at equilibrium. The Ka for HCOOH is 1.8×10−4.
Shtirlitz [24]

Answer:

the pH of HCOOH solution is 2.33

Explanation:

The ionization equation for the given acid is written as:

HCOOH\leftrightarrow H^++HCOO^-

Let's say the initial concentration of the acid is c and the change in concentration x.

Then, equilibrium concentration of acid = (c-x)

and the equilibrium concentration for each of the product would be x

Equilibrium expression for the above equation would be:

\Ka= \frac{[H^+][HCOO^-]}{[HCOOH]}

1.8*10^-^4=\frac{x^2}{c-x}

From given info, equilibrium concentration of the acid is 0.12

So, (c-x) = 0.12

hence,

1.8*10^-^4=\frac{x^2}{0.12}

Let's solve this for x. Multiply both sides by 0.12

2.16*10^-^5=x^2

taking square root to both sides:

x=0.00465

Now, we have got the concentration of [H^+] .

[H^+] = 0.00465 M

We know that, pH=-log[H^+]

pH = -log(0.00465)

pH = 2.33

Hence, the pH of HCOOH solution is 2.33.

7 0
3 years ago
Read 2 more answers
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