How much calcium hypochlorite (65% strength) is needed to make 200 L of 2% hypochlorite solution? (Assume that a 1% solution is equivalent to 10,000 mg/L concentration)

Answers

Answer 1

Answer:

To solve this we use the equation,

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

65 x V1 = 2 x 200 L

V1 = 6.15 L

Related Questions

Write the balanced molecular and net ionic equations for each of the following neutralization reactions. (a) Aqueous acetic acid (HC2H3O2) is neutralized by aqueous barium hydroxide. (b) Solid chromium(III) hydroxide reacts with nitrous acid. (c) Aqueous nitric acid and aqueous ammonia react.
This reaction is an example of what type of reaction? H2SO3(aq) H2O(l) + SO2(g)a. a synthesis reaction b. a disynthesis reaction c. a combustion reaction d. a decomposition reaction
Please show step by step and I will mark you as brainliest answer ❤️
An electric iron is used to remove wrinkles from clothes the electric iron is made of metal which property of this substance is most useful for this applicationboiling pointdensity electrical conductivity thermal conductivity
If the half-life of an unstable isotope is 10,000 years, and only 1/8 of the radioactive parent remains in a sample, how old is the sample?

Given the balanced equation representing a reaction:Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)
This reaction occurs more quickly when powdered iron is used instead of a single piece of iron of the same mass because the powdered iron
(1) acts as a better catalyst than the single piece of iron
(2) absorbs less energy than the single piece of iron
(3) has a greater surface area than the single piece of iron
(4) is more metallic than the single piece of iron

Answers

Answer: Option (3) is the correct answer.

Explanation:

One of the important factor on which rate of reaction depends is surface area. That is, when a compound is crushed into powdered form then there will be increase in surface area of the compound.

Hence, now more number of particles can interact, therefore, there will be increase in rate of reaction.

Thus, we can conclude that reaction occurs more quickly when powdered iron is used instead of a single piece of iron of the same mass because the powdered iron has a greater surface area than the single piece of iron.

Why does a high temperature have to be used to weld pieces of metal together

Answers

because of the metling point of metals, it is difficult to just simply put metal together and have them to stay together without any type of glue or epoxy based creams.

wielding is used to melt the surface or even change the compound completely so they are able to combine with other metals.

same thing with atoms, you need a lot of heat, and speed to simply make salt or even copper because of the elements not really being favorable of each other.

What is a negatively charged subatomic particle?

Answers

i think its electrons

The diagram below shows different layers of sedimentary rocks.Picture showing seven layers of rocks of different colors labeled A, B, C, D, E, F, and G from top to bottom; A and B are parallel horizontal layers at the top of the diagram and C, D, E, F, and G are slanted layers with C closest to the surface and G at the bottom.

Based on the diagram, which of these inferences is most likely correct?

A.Layer A is older than Layer B.
B.Layer C is older than Layer E.
C.Layer F is younger than Layer D.
D.Layer B is younger than Layer G.

Answers

D. layer B is younger than layer G.

Answer:

The correct answer is D.

Layer B is younger than layer G

the trend for ionization energy is a general increase from left to right across a period. However phosphorus is found to have higher first ionization energy value than sulfur. Explain this exception to the general trend in terms of electron arrangements and attraction/repulsion

Answers

Since phosphorus is in the 5th group it has the ability to gain or lose electrons

Given the equation: 2Na + 2H2O → 2NaOH + H2 Which substance in this equation is a binary compound?

Answers

Answer: In the following equation, $H_2O$ is considered as a binary compound.

Explanation: A binary compound is considered as a compound having 2 elements only. In the following chemical equation:

$2Na+2H_2O\rightarrow 2NaOH+H_2$

There are 2 compounds present because compound is defined as the chemical combination of two or more elements in a fixed ratio.

In the equation, compounds are: $H_2O$ and $NaOH$

$H_2O$ consists of 2 elements which are hydrogen and oxygen and hence is considered as a binary compound.

$NaOH$ consists of 3 elements which are sodium, hydrogen and oxygen and hence, cannot be considered as a binary compound.

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