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Dima020 [189]
4 years ago
13

2

Chemistry
1 answer:
vazorg [7]4 years ago
6 0

Answer:

the question to your answer to your question omnivores.

Explanation:

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Which equation shows how to calculate how many grams (g) of Mg(OH)2 would be produced from 4mol KOH? The balanced reaction is:
Simora [160]

Answer:

4 mol of KOH would produce 116.6 g of Mg(OH)₂

Explanation:

According to the following balanced equation:

  • MgCl₂+ 2 KOH -----> Mg(OH)₂ + 2 KCL

One can note that 2 mol of KOH react with MgCl₂ to produce 1 mol of Mg(OH)₂.

using cross multiplication  

2 mol of KOH → 1 mol of Mg(OH)₂.

4 mol of KOH → ?? mol of Mg(OH)₂.

no of moles of  Mg(OH)₂ = (1 mol* 4 mol) / 2 mol =2 mol

Now we can convert moles of  Mg(OH)₂ to grams using the formula

mass of Mg(OH)₂= (no. of moles * molar mass) = (2 mol * 58.3g/mol) = 116.6 g

  • So, 4 mol of KOH would produce 116.6 g of Mg(OH)₂.
6 0
4 years ago
What are did facts about atomic number 20?
stira [4]
<span></span>Basic Calcium Facts

Name: Calcium

Atomic Number: 20

Element Symbol: Ca

Group: 2

Period: 4

Block: s

Element Family: Alkaline Earth

Atomic Mass: 40.078(4)

Electron Configuration: [Ar]4s<span>2
</span>

Full: 1s22s22p63s23p64s2 (full)

3 0
3 years ago
When the n quantum number equals 1, we are in what orbital?
g100num [7]

Answer:

p orbital

Explanation:

8 0
3 years ago
Organisms can reproduce asexually or sexually. All BUT ONE of the steps below is involved in sexual reproduction. Which step
Elis [28]

Answer:

In some organisms, a piece of the parent may bud off to produce offspring.

Explanation:

This is asexual because asexual reproduction does not involve the fusion of gametes or change in the number of chromosomes, like sexual reproduction. In asexual reproduction, the offspring arises from cell division during mitosis, which is what is being described here.

8 0
3 years ago
Write an equation that represents the action in water of rubidium hydroxide as an Arrhenius base.
Anika [276]

Answer:

RbOH  → Rb⁺ +  OH⁻

As the hydroxide can gives the OH⁻ in water, it is considered as an Arrhenius's base

Explanation:

Arrhenius theory states that a compound is considered a base, if the compound can generate OH⁻ ions in aqueous solution.

Our compound is the RbOH.

When it is put in water, i can dissociate like this:

RbOH  → Rb⁺ +  OH⁻

As the hydroxide can gives the OH⁻ in water, it is considered as an Arrhenius's base

3 0
3 years ago
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