What happens when a compound is formed between the two substance

What should you do if you need to determine the odor of a chemical or a solution?

Cerrena [4.2K]

Answer:

Explanation:

When you are in the laboratory and take a direct sniff of the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When it is necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air toward your face.

3 0

3 years ago

What is the simplest whole-number ratio of atoms in a molecule or formula unit called?

steposvetlana [31]

Hi there! The simplest whole-number ratio of the atoms in a molecule of formula is called the Empirical formula.

4 0

4 years ago

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The human body burns glucose (C6H₁2O6) for energy according to this chemical reaction:

SashulF [63]

Number of breaths required to burn 2.5 kg mass of fat is 175000 breaths.

<h3>What mass mass of carbon dioxide is in one breath?</h3>

The mass of carbon dioxide in one breath is calculated as follows:

Mass = volume * density

Volume of Carbon dioxide in one breath = 4% * 500

Volume of Carbon dioxide in one breath = 20 mL = 2 * 10⁻⁵ m³

Density of carbon dioxide = 2.0 kg/m³

Mass of carbon dioxide in one breath = 2 * 10⁻⁵ m³ * 2.0 kg/m³

Mass of carbon dioxide in one breath = 4 * 10⁻⁵ kg

Mass of carbon dioxide to be exhaled to burn 2.5 kg of fat = 2.8 kg * 2.5 = 7 kg of carbon dioxide.

Number of breaths required = 7 kg/4 * 10⁻⁵ kg

Number of breaths required = 175000 breaths

In conclusion, the mass of carbon dioxide in one breath determines the number of breaths required to burn 2.5 kg of fat.

Learn more about mass at: brainly.com/question/2537310

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5 0

2 years ago

The initial temperature of a bomb calorimeter is 28.50°C. When a chemist carries out a reaction in this calorimeter, its tempera

Fed [463]

Answer:

The correct answer is 5,170 J

Explanation:

The heat absorbed by the reaction (Qr) is equal to the heat released by the calorimeter (Qcal):

Qr = - Qcal

We calculate Qcal from the mass of the calorimeter (m), the specific heat (Cp), and the change in temperature (ΔT), as follows::

Qcal = m x Cp x ΔT

We have the following data:

m = 1.400 kg x 1000 g/1 kg = 1,400 g

Cp = 3.52 J/g°C

Initial T = 28.50°C + 273 = 301.50 K

Final T = 27.45°C + 273 = 300.45 K

ΔT = Final T - Initial T = 300.45 K - 301.50 K = -1.05 K

So, we introduce the data in the mathematical expression for Qcal:

Qcal = m x Cp x ΔT = 1,400 g x 3.52 J/g°C x (-1.05 K) = -5,174.4 J ≅ -5,170 J

Therefore, the heat absorbed by the reaction is:

Qr = - Qcal = -(-5,170 J) = 5,170 J

5 0

4 years ago

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What is a nonpolar covalent bond?

Vlad1618 [11]

<u>Answer:</u> The correct answer is Option D.

<u>Explanation:</u>

A non-polar covalent bond is defined as the bond which is formed between the atoms having no difference in electronegativity values. For Example: $Cl_2,H_2$ etc..

In this bond, the electrons are shared equally and $\Delta EN$ value is equal to 0.

Hence, the correct answer is Option D.

8 0

3 years ago