Which question cannot be explained by chemistry?

Chemistry

2 answers:

Ostrovityanka [42]4 years ago

8 0

C. How does a convention oven cook food?

Mars2501 [29]4 years ago

8 0

Answer:

How does a convection oven cook food?

Explanation:

In the world everything related to matter, its reaction, its production, the properties and the laws which govern the reactions and properties are considered in chemistry.

However for simplification we study the reactions or chemical change in chemistry and the physical interactions between heat or energy with matter in physics.

So the yeast make bread dough rise (due to oxygen), the dissolution of sugar faster in hot water, or peeled apples turn brown (oxidation) are chemical phenomenon.

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A chemist prepares a solution of zinc oxalate by measuring out of zinc oxalate into a volumetric flask and filling the flask to

anyanavicka [17]

<u>Answer:</u> The concentration of zinc oxalate is $1.7\times 10^{-11}M$

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$

We are given:

Moles of zinc oxalate = $0.0075\mu mol=7.5\times 10^{-9}mol$ (Conversion factor: $1mol=10^{6}\mu mol$ )

Volume of solution = 450 mL

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{7.5\times 10^{-9}\times 1000}{450mL}\\\\\text{Molarity of solution}=1.66\times 10^{-11}M=1.7\times 10^{-11}M$

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 2.

Hence, the concentration of zinc oxalate is $1.7\times 10^{-11}M$

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3 years ago

Describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms a

Igoryamba

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge.

Each element has a specific mass number and a specific atomic number. These two numbers are fixed for an element. The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom. it has mass number 235 , it means that the sum of neutrons and protons in a carbon atom is 235.3

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2 years ago

Read 2 more answers

Can someone help me, please?

puteri [66]

The temperature at which the oven it set it should be.

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3 years ago

That gas can be used in mixtures with nitrogen gas to ripen bananas just before they are put on the grocery shelf. This mixture

Sphinxa [80]

Answer:

C2H4