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2 years ago

Read each statement regarding food and beverages in the lab and determine if each is true or false.

Chemistry

1 answer:

Scrat [10]2 years ago

6 0

Answer:

1. True

2. False

3. False

4. True

Explanation:

A lab is an abbreviation for laboratory and it can be defined as a building that is equipped with scientific equipments and apparatus, which are used for performing scientific experiments, manufacturing of chemicals and drugs, research, testing and analysis of hypothesis in order to establish a theory.

Generally, laboratory scientists, technicians, students and anyone going into a laboratory is prohibited from taking in edible items such as food and water.

Basically, all laboratories are required to place a visible warning sign around the lab prohibiting the bringing in and ingestion of food in any form.

1. True: Tobacco products of all kinds are prohibited in lab.

2. False: Beverages are allowed in lab as long as they are in containers with lids. It's completely prohibited from the lab so as to prevent food poisoning.

3. False: Chewing gum is okay in the lab as long as you don't blow bubbles.

4. True: Food items should not be brought into the lab.

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In a solution the___is the liquid that the____is added to.

Aleksandr [31]

Answer:

In a solution the solvent is the liquid that the solute is added to.

Explanation:

Solute + Solvent = Solution.

For example: An aqueous solution of 10 g of NaCl in 100 g of water

NaCl → solute → what you dissolved

H₂O → solvent → where you dissolve

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3 years ago

The Density of pure carbon in Diamond form is 3.52 g/cm^3. How many cubic inches would 23.7 moles of pure diamond occupy?

Vedmedyk [2.9K]

Answer : The volume of pure diamond is $0.493inch^3$

Explanation : Given,

Density of pure carbon in diamond = $3.52g/cm^3$

Moles of pure diamond = 23.7 moles

Molar mass of carbon = 12 g/mol

First we have to calculate the mass of carbon or pure diamond.

$\text{ Mass of carbon}=\text{ Moles of carbon}\times \text{ Molar mass of carbon}$

Molar mass of carbon = 12 g/mol

$\text{ Mass of carbon}=(23.7moles)\times (12g/mole)=284.4g$

Now we have to calculate the volume of carbon or pure diamond.

Formula used:

$Density=\frac{Mass}{Volume}$

Now putting all the given values in this formula, we get:

$3.52g/cm^3=\frac{284.4g}{Volume}$

Volume = $80.8cm^3$

As we know that:

$1cm^3=0.061inch^3$

So,

Volume = $0.061\times 80.8inch^3$

Volume = $0.493inch^3$

Therefore, the volume of pure diamond is $0.493inch^3$

5 0

2 years ago

Monique hears on the weather report that cold, dry air from Canada is going to hit warm, moist air from the Gulf of Mexico. She

lara [203]

Answer:

She should suspect a Tornado.

Explanation:

Tornadoes form when warm humid air collides with cold dry air. The denser the cold air is pushed over warm air, causing an updraft. As soon as it reaches the ground a tornado is formed.

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2 years ago

A tiger cub has a pattern of stripes on its fur that is similar to that of its parents. Where are the instructions stored that p

madreJ [45]

Answer:

On genes within chromosomes

Explanation:

-The fur pattern is a genetic trait whose instruction is carried in the DNA's base sequence.

-These instructions are organized into genes and each gene is only responsble for the making of a functional product.

-Hence, the instructions are stored on genes within chromosomes.

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2 years ago

1.0 gallon to mm<br>N.B 1 gallon=3.8L

I am Lyosha [343]

Answer:

Gallon (US) to Milliliter Conversion Table

Gallon (US) [gal (US)] Milliliter [mL]

1 gal (US) 3785.411784 mL

2 gal (US) 7570.823568 mL

3 gal (US) 11356.235352 mL

5 gal (US) 18927.05892 mL

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2 years ago