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3 years ago

14

What is a scientific problem in the world that really bugs you

1 answer:

Korolek [52]3 years ago

6 0

Answer:

A scientific problem is something you don't understand but you can do an experiment to help you understand. Scientific problems are usually based on observation of scientific phenomena. Here is some advice to help you identify a scientific problem you can address by designing your own experiment.

Explanation:

Example of a scientific problem are Clean Drinking Water.

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What is the mass, in pounds, of 389 mL of a gas that has a density of 1.29 g/L?

devlian [24]

Answer: Mass of gas is 0.001 pounds.

Explanation:

Density is defined as the mass contained per unit volume.

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

Given : Mass of gas = ?

Density of gas = $1.29g/L$

Volume of gas = 389 ml = 0.389 L (1L=1000ml)

Putting in the values we get:

$1.29g/L=\frac{mass}{0.389L}$

$mass=0.5grams$

$mass=0.5\times 0.002lb=0.001lb$ (1g =0.002 lb)

Thus the mass of gas is 0.001 pounds.

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3 years ago

How many Zn atoms are there in 4.65 moles of Zn?

Nesterboy [21]

So your answer would pretty much be 2.80 x 10^24. The picture is just the explanation and how you would get that answer.

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3 years ago

(55 points) Please help me with my homework please please help me thanks so much

balandron [24]

Answer:

I didn't do the observation so I can't help sorry

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3 years ago

Is alcohol evaporating a chemical or physical change

snow_tiger [21]

Physical change , the states are changing from liquid to gas

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3 years ago

What is the molarity of a 250.0 milliliter aqueous solution of sodium hydroxide that contains 15.5 grams of solute? 6.2 M

Alchen [17]

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M = 0.3875 mol / 0.250 L = 1.55M

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4 years ago

Read 2 more answers