Write a balanced equation for double replacement of KOH+ZnCl2

Answers

Answer 1

Answer:

Answer :

Double replacement reaction : It is a type of reaction in which a positive cation and a negative anion of the reactants react to give a new compound as a product.

$AB+CD\rightarrow AD+CB$

In this, A and C are the cations and B and D are the anions.

When one mole of potassium hydroxide react with the one mole of zinc chloride to give one mole of zinc hydroxide and 2 moles of potassium chloride.

The balanced chemical reaction is,

$KOH+ZnCl_2\rightarrow Zn(OH)_2+2KCl$

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Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas. During this process, which property of the ice cube remained unchanged

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The fact that the ice cube was water/H2O did not change:

Velocity is the combination of which of the following? speed and momentum
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A container of hydrogen at 172 kpa was decreased to 85.0 kpa producing a new volume of 765 mL. What was the original volume

Answers

Answer:

$\boxed{\text{378 mL}}$

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_(1)V_(1) = p_(2)V_(2)$

Data:

$\begin{array}{rclrcl}p_(1)& =& \text{172 kPa}\qquad & V_(1) &= & \text{?} \np_(2)& =& \text{85.0 kPa}\qquad & V_(2) &= & \text{765 mL}\n\end{array}$

Calculations:

$\begin{array}{rcl}172V_(1) & =& 85.0 * 765\n172V_(1) & = & 65 025\nV_(1) & = &\textbf{378 mL}\n\end{array}\n\text{The original volume was } \boxed{\textbf{378 mL}}$

Freezing and thawing of water can cause A.erosion B.weathering C. flooding D.deposition

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the answer is b weathering

Are producers heterotrophs or autotrophs?

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Answer:

Autotrophs

Explanation:

Autotrophs make their own food, or produce food for themselves through the process of photosynthesis. Therefore, we can say that autotrophs are also producers. Some examples of producers are plants, algae, and some types of bacteria.

How do you know the wave is a mechanical wave?

Answers

If it's mechanical then it moves through matter

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