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abruzzese [7]
3 years ago
12

Branliest to correct answer

Chemistry
1 answer:
ivann1987 [24]3 years ago
8 0
The answer is D) The boy uses force to move the rock a distance
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17. An industrially important element contains
likoan [24]

Answer:

Iron (Fe)

Explanation:

The number of electrons (-) is usually the same as the number of protons (+) in the atom of the element (unless it is an ion).

The element described has 26 electrons, so we can assume that it has 26 protons as well. The number of protons in an atom is the atomic number of element that the atom is.

Element 26 on the PTE is Iron (Fe), which does rust (oxidation) in air and water.

8 0
3 years ago
Which occurs when a warm fluid cools down?
amid [387]

Answer:

option A is correct answer of this question

hope it helps and your day will be full of happiness

5 0
3 years ago
Read 2 more answers
1. Write the name of any four chemical preservatives mixed with readymade<br>Food.​
Inga [223]

Answer:

There are many different types of preservatives like Benzoic acid, Calcium Sorbate, Erythorbic Acid, Potassium Nitrate and Sodium Benzoate. Some act like antioxidants used for slowing down spoilage like Ascorbyl Palmitate, Butylated Hydroxy anisole (BHA) and Butylated Hydroxytoluene (BHT

4 0
2 years ago
How many moles of water are produced when 2 moles of NaHCO3 react with 2 moles of HCI?
Tju [1.3M]

Answer:

H₂O = 3.56 moles

MgCl₂ = 1.78 moles

Explanation:

7 0
3 years ago
I need help on thiss
Sergio039 [100]

The reaction is not balanced

<h3>Further explanation</h3>

Given

Reaction

2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

Required

The number of atoms

Solution

In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number

Reactants : Fe(s)+O₂(g)

Fe = 2 atoms

O = 3 x 2 = 6 atoms

Products : Fe₂O₃(s)

Fe = 2 x 2 = 4 atoms

O = 2 x 3 = 6 atoms

The reaction is not balanced because the number of Fe atoms is not the same

The balanced reaction should be:

4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

8 0
3 years ago
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