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3 years ago

13

What were punnett squares developed to do

1 answer:

irakobra [83]3 years ago

3 0

Punnett squares were developed to see what the variety of genetic outcomes could possibly be

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A company is testing drinking water and wants to ensure that ca content is below 155 ppm. What is the maximum amount of Ca that

BabaBlast [244]

Answer:

138 mg

Explanation:

A company is testing drinking water and wants to ensure that Ca content is below 155 ppm (= 155 mg/kg), that is, <em>155 milligrams of calcium per kilogram of drinking water</em>. We need to find the maximum amount of calcium in 890 g of drinking water.

Step 1: Convert the mass of drinking water to kilograms.

We will use the relation 1 kg = 1000 g.

$890g \times \frac{1kg}{1000g} =0.890kg$

Step 2: Calculate the maximum amount of calcium in 0.890 kg of drinking water

$0.890gH_2O \times \frac{155mgCa}{1kgH_2O} = 138mgCa$

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3 years ago

Chemistry help!

Norma-Jean [14]

Refer to the attachment.

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2 years ago

What volume of stock solution and water must you add to prepare 36.25ml of a 1.25M solution

Serjik [45]

Given :

Number of moles , n = 36.25 mol .

Molarity , M = 1.25 M .

To Find :

The volume of water required .

Solution :

Moarity is given by :

$M=\dfrac{n}{V}$

So , $V=\dfrac{n}{M}$

Here , n is number of moles and M is molarity .

Putting all values in above equation , we get :

$V=\dfrac{36.25}{1.25}\\\\V=29\ L$

Therefore , volume of water required is 29 L .

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3 years ago

you have accidentally broken a test tube and spilled a chemical on the bench. which of the following best describes what you sho

ANEK [815]

Tell the teacher, do NOT clean it up yourself.

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2 years ago

Which of the following is an endothermic reaction?

telo118 [61]

The answer is the reaction ins a cold pack

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3 years ago

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