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2 years ago

How is the composition of a meteorite relevant to finding out the composition of earth’s core?

2 answers:

7 0

Since the belief is that the Earth was formed by an
enormous number of collisions of meteors, the
iron would have collected at the core due to its
mass. Many meteorites are about the same age as
the solar system so they may resemble the
material at the core.

boyakko [2]2 years ago

5 0

Explanation:

Since scientists think planets and meteorites were made at the same time and in the same place, it seems logical that whatever a meteorite is made of is also what planets are made of.

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Ainat [17]

All the objects are formed from the gas and dust orbitting the sun

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3 years ago

How many grams of H2O are in 34.2 grams of NAOH<br> Need ASAP

Brrunno [24]

Answer:

15.438g H2O

Explanation:

First you need to find the reaction equation:

2H2O+2Na=2NaOH + H2

Hydrogen is a diatomic molecule so it will have a subscript of 2 on the right hand side. From there we can balance the reaction.

Then we can use stoichiometry:

34.2g NaOH * (1 mol NaOH/39.908g NaOH) * (2 mol H2O/2 mol NaOH) * (18.015g H2O/1 mol H20) = 15.438g H2O

It is important that when you use stoichiometry that all your units cancel out until you only have the unit you want.

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3 years ago

Do you think this is an ethical decision

mrs_skeptik [129]

yes no maybe do you boo

5 0

3 years ago

What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?

Art [367]

50 grams or 50,000 mili grams is the mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.

Explanation:

Total mass of solution = 1000 grams or 1000 ml since 1 gram = 1 ml

concentration is 5 parts per million ( 5 mg in 1000 ml solution or 0.005 gram in 1000 ml)

the formula used for parts per million:

parts per million = $\frac{mass of solute (mg)}{volume of solution}$

putting the values in the equation:

parts per million = $\frac{mass of solute}{volume of solvent}$

0.005 x 1000 = mass of solute

50 grams= mass of solute

converting this into mg

50,000 mg. is the total mass of solute in 5ppm of 1000 ml solution.

4 0

3 years ago

Is material that has a density of 0.2g/ml good for building a bridge or for making couch cushions

lisov135 [29]

D = 0.2 g / ml = 0.2 g / cm³
For example, density of steel is 7.85 g / cm³.
Density of pure water is 1.0 g/cm³. An object which has a density < 1.0 g/cm³ will float in water.
Answer: Material that has a density of 0.2 g/ml ( 0.2 g/cm³ ) is good for making couch cushions.

8 0

3 years ago

Read 2 more answers