Yesterday we combined Hydrochloric Acid HCl with Sodium Hydroxide NaOH in a violent reaction that resulted in water H2O and common table salt NaCl. How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your calculation.

also how many grams of salt NaCl will be produced and how many grams of water H2O be produced?

Answers

Answer 1

Answer: HCl + NaOH ---> NaCl + H2O

1 mol HCl = 1 mol NaOH

mole HCl = 36.5 g // mole HaOH = 40 g

36.5 HCl is the answer.

mole NaCl = 58,5 g // mole H2O = 18g

HCl (36,5 g) ⇒ NaCl (58,5 g)
HCl (36,5 g) ⇒ H2O (18 g)

So, 58,5 g NaCl and 18 g H2O are the answer.

Answer 2

Answer: Reaction:
HCl + NaOH ---> NaCl + H2O

1 mole of HCl = 36,5 g
1 mole of NaOH = 40g

so, according to the reaction:
1 mol HCl = 1 mol NaOH
so, we need > 36,5 g HCl (hydrochloric acid)

answer: 36,5 g HCl (hydrochloric acid)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
next question.

1 mole of NaCl = 58,5 g
1 mole of H2O = 18g

so, according to the reaction:
1 mole of HCl (36,5 g) ----------------- - 1 mole of NaCl (58,5 g)
(the same for NaOH)
i
1 mole of HCl (36,5 g) ------------------ 1 mole of H2O (18 g)
(the same for NaOH)

so, this reaction is stechiometric

answer: 58,5 g NaCl i 18g H2O

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eight
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Answers

Answer:

eight

Explanation:

In the first stage of DNA replication each DNA molecule replicates into two daughter DNA. In the second stage of DNA replication each of the two daughter DNA molecule replicates into two daughter DNA, thus forming a total of four DNA molecules. In the third stage of DNA replication each of the four daughter DNA molecule replicates into two daughter DNA, thus forming a total of eight DNA molecules.

Every time you replicate DNA you get 2 new DNA and 1 strand of each DNA is composed of the parent strand. So after 3 rounds of replication....
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Thus the answer is the third option, eight (8).

Which process in the water cycle do plants perform?

Answers

The answer to this question is photosynthesis.

The anwser is photosynthesis. Hope I helped..

Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acidic, basic, or neutral? Show your work

Answers

You can use the fallowing equations:
pH=-log[H⁺]
pH=14-pOH
pOH=-log[OH⁻]
[H⁺]=K(w)/[OH⁻] (K(w)=1.01×10⁻¹⁴)

You can use any of those equation in what ever order to find the [H⁺] and then pH. If pH>7, the solution is basic. If the pH<7, the solution is acidic.

I will show you how I would find it but there is more than one way to do it.
[H⁺]=(1×10⁻¹⁴)/(10⁻¹¹)
[H⁺]=0.001M
pH=-log(0.0010)
pH=3.00
Therefore the solution is acidic.

I hope this helps. Let me know in the comments if anything is unclear.

Answer:

If we have $[H+][OH-] = Kw = 1.0 x 10^-^1^4$

Then $[H+]= Kw/ [OH-]= 1.0x 10^-^1^4/ 1 x 10^-^1^1 =1 x 10^-^3 mol/L$

$pH = - log [H+] = - log 1 x 10^-^3 = 3$ $< 7$

This is a Acidic Solution

hope this helps

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Answers

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b.
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Answers

Answer: d.

all of the above

Explanation:

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River slope will cause the erosion of surface materials by using water. Shape of the stream bed is also a factor this is because of the fact that the wider the surface covered by water more erosion can be caused. If the volume of water flowing in the stream is high the water will take away the particles by causing friction over the surface.

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