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gladu [14]
4 years ago
9

It’s is the same one from my recent ones

Chemistry
1 answer:
UkoKoshka [18]4 years ago
5 0
<h2>9. Given : P + O2 = P2O5</h2>

Balanced Chemical Equation: <u>4</u>P + <u>5</u>O2 = <u>2</u>P2O5

<u>Reactant Product</u>

P = (1) 4 | P = (2) 4

O = (2) 10 | O = (5) 10

Reaction Information

Phosphorus + Dioxygen = <u>Phosphorus Pentoxide</u>

Reaction Type: <u>Synthesis</u>

<h2>10. Given: HCl + NaOH = NaCl + H2O </h2>

<u>Reactant Product</u>

H = 2 | H = 2

Cl = 1 | Cl = 1

Na = 1 | Na = 1

O = 1 | O = 1

<h3>Chemical Equation is already in balance.</h3>

Reaction Information<em>:</em><em> </em><em>Hydrogen Chloride </em>+ <em>Sodium Hydroxide</em> = <em>Sodium Chloride </em>+ <em>Water</em>

Reaction Type<u> </u><u>:</u><u> </u><u>Double Displacement (Acid-Base)</u>

<h3>For more info:</h3>

<u>How to balance chemical equation?</u>

brainly.com/question/15939935

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Determine which choice is an example of an endothermic process.
klemol [59]

Answer:

D. Baking bread

Explanation:

In this process, energy is absorbed and in an endothermic process energy is absorbed too.

6 0
3 years ago
What is the precent yield if the actual yield is 25g and 100g should have formed?
11Alexandr11 [23.1K]

Answer:

Percent yield is 25%

Explanation:

Information given is

Actual yield is 25 g

But the yield should be 100 g

The percent yield is defined as the ratio of the actual yield and the predicted yield it means that out of the predicted yield what percentage of the actual yield is obtained

∴ Percent yield = (Actual yield ÷ Predicted yield) ×  100

In case of the given problem the percent yield will be

(25÷100) × 100 = 25%

∴ Percent yield = 25%

3 0
3 years ago
How do minerals form?
borishaifa [10]
Minerals form by erosion of rocks.The erosion process includes water and other rocks rubbing against other rocks.
8 0
3 years ago
Aluminium can not rust why .​
lisabon 2012 [21]

Answer:

Aluminium Can not rust (Can't rust also meaning <u>Corrode)</u>

Because it's surface is protected by aluminium Oxide which stops the metal below from coming in contact with the air (which contains Oxygen) Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

<u>Corrode</u>

<u>destroy or damage (metal, stone, or other materials) slowly by chemical action.</u>

<u />

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5 0
2 years ago
What types of teeth do mammals have? Select the three correct answers.
mariarad [96]

Answer:

incisors, molars, canines.

Explanation:

All of these 3 teeth types appear in ourselves so in conclusion mammals. Plus there has never been gills in any mammal.

5 0
2 years ago
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