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natta225 [31]
3 years ago
15

Please,help me in question number 2 and 4.

\\ " alt="2and4 \\ " align="absmiddle" class="latex-formula">

Chemistry
1 answer:
svetoff [14.1K]3 years ago
8 0
I think it’s 890 I really don’t know
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Is science logical please help meeeeeee
atroni [7]

Answer:

It kind of is logical so my answer is yes

6 0
3 years ago
Read 2 more answers
Calcium chloride reacts with sodium hydroxide to form solid calcium hydroxide, Ca(OH)2. The balanced net ionic equation is
katen-ka-za [31]

Answer:

Ca²⁺ + 2 OH⁻ → Ca(OH)₂(s)

Explanation:

In chemistry, the net ionic equation is a way to write a chemical reaction whereas you write only the ions that are involved in the reaction.

When calcium chloride, CaCl₂ reacts with sodium hydroxide, NaOH to produce Ca(OH)₂ the only ions involved in the reaction are Ca²⁺ and OH⁻, thus, the balanced net ionic equation is:

<em>Ca²⁺ + 2 OH⁻ → Ca(OH)₂(s)</em>

<em>Cl⁻ and Na⁺ are not involved in the reaction and you don't have to write them.</em>

5 0
3 years ago
Which reaction has the highest atom economy for the production of C02?​
In-s [12.5K]

The highest atom economy

2CO + O₂ ⇒ 2CO₂

<h3>Further explanation</h3>

Given

The reaction for the production of CO₂

Required

The highest atom economy

Solution

In reactions, there are sometimes unwanted products that can be said to be a by-product or a waste product. Meanwhile, the desired product can be said to be a useful product, which can be shown as the atom economy

of the reaction

the higher the atomic economy value of a reaction, the smaller the waste/ byproducts produced, so that less energy is wasted

The general formula:

Atom economy = (mass of useful product : mass of all reactants/products) x 100

<em>or </em>

Atom economy = (total formula masses of useful product : total formula masses of all reactants/products) x 100

So a reaction that only produces one product will have the highest atomic value, namely the reaction in option C

4 0
2 years ago
Habitat ____________ splits ecosystems into pieces and makes populations more vulnerable to disturbances or climate change.
larisa [96]

<span>fragmentation that is the answer</span>
7 0
3 years ago
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What is the mass of 25 Liters of nitrogen dioxide gas?
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Answer:

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Explanation:

mruno bars is the wae

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coileach

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7 0
3 years ago
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