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2 years ago

Give one safety precaution should take during carbon and lead oxide experiment

Chemistry

2 answers:

Tcecarenko [31]2 years ago

8 0

Answer : Use safety goggles and gloves. Remember not to touch you face

Explanation:

Bingel [31]2 years ago

3 0

Answer:

use safety goggles

Explanation:

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A large Ka favors the _____.

SVETLANKA909090 [29]

The first one, "Production of hydronium ions."

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2 years ago

Read 2 more answers

Mn2+

snow_lady [41]

The molarity of the stock Mn²⁺ ions is 0.0288 M

Based on the dilution formula;

The molarity of A is 0.00144 M
The molarity of B is 0.0000576 M
The molarity of C is 0.000001152 M

<h3>What is the molarity of a solution?</h3>

The molarity of a solution is the number of moles of a solute dissolved in a given volume of solution in liters.

Molarity = number of moles/volume

The molarity of the stock solution is:

moles of Mn²⁺ ions = mass / molar mass

molar mass of Mn²⁺ ions = 55.0 g/mol

moles of Mn²⁺ ions = 1.584 / 55

moles of Mn²⁺ ions = 0.0288 moles

molarity of Mn²⁺ ions = 0.0288 / 1

molarity of Mn²⁺ ions = 0.0288 M

The dilution formula is used to determine the molarities of A, B, and C.

C₁V₁ = C₂V₂

C₂ = C₁V₁ / V₂

Where;

C₁ = initial molarity
V₁ = initial volume
C₂ = final molarity
V₂ = final volume

Molarity of A = 50 * 0.0288 / 1000

Molarity of A = 0.00144 M

Molarity of B = 10 * 0.00144 / 250

Molarity of B = 0.0000576 M

Molarity of C = 10 * 0.0000576 / 500

Molarity of C = 0.000001152 M

Learn more about molarity at: brainly.com/question/17138838

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1 year ago

15. When traveling through a smoke-filled area, a person must be able

maxonik [38]

When traveling through a smoke-filled area, a person must be able to have distance of at least 4 feet in order to safely reach a fire exit. That is option C.

<h3>What is a smoke-filled area?</h3>

Smoke-filled area is an enclosed area that is filled with smoke gas that is usually made up of carbon monoxide.

The smoke-filled area is usually caused by

Fire out break

Burning of plastics or chemical products

Release of fuming gases.

When there is smoke-filled area die to fire out break, there are some guidelines to follow to safely reach the fire exit early enough.

The importance of these guidelines include the following:

enable rescuers to navigate a scene more quickly,

identify risks and hazards,

locate safety points,

determine the safest way in and out of a building, and

map out evacuation routes.

The affected individual should get down and crawl while taking short breath through the nose because cleaner air is nearest to the floor.

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1 year ago

What is an atom called when two stick together

Evgen [1.6K]

<em>An atom is called the mass number. </em><em />

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3 years ago

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What is the amount in grams of EDTA needed to make 329.5 mL of a 0.03 M EDTA solution. The molar mass of EDTA is 374 g/mol. (Onl

12345 [234]

Taking into account the definition of molarity and molar mass, the amount of mass of EDTA needed to make 329.5 mL of a 0.03 M EDTA solution is 3.69699 grams.

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$molarity=\frac{number of moles}{volume}$

Molarity is expressed in units .

Definition of molar mass

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

In this case, you need to make 329.5 mL of a 0.03 M EDTA solution. Then, you know: