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3 years ago

If you were going to be a scientist, what type of scientist would you be?

Chemistry

2 answers:

solmaris [256]3 years ago

8 0

I would be a astronomer. I don't know what it is but the stars and space just interests me a lot. I just, don't kinow

borishaifa [10]3 years ago

8 0

I would be a astronomer as i have always been intrigued by the stars and the huge galaxy. It is interesting to observe the planets, stars and galaxies and then observe the data afterwards. It is also very interesting to learn about gas giants, orbits, sizes of planets and learning how different systems are born, evolve and die.

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Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many moles are present in this

Masja [62]

<u>Answer:</u> The moles of given hydrocarbon is 0.3 moles

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of ethane = 10.0 g

Molar mass of ethane = $[(2\times 12)+(6\times 1)]=30g/mol$

We need to divide the given value by the molar mass.

Putting values in above equation, we get:

$\text{Moles of ethane}=\frac{10.0g}{30g/mol}=0.3mol$

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.

Hence, the moles of given hydrocarbon is 0.3 moles

7 0

3 years ago

Write out the balanced equation for the reaction that occurs when Mg(OH)2 and HCl react together. You do not need to make your s

SVEN [57.7K]

Magnesium hydroxide react with hydrochloride to give magnesium chloride and water
THe word equation
magnesium hydroxide +hydrochroric acid---> Magnesium chloride+water

chemical equation
Mg(OH)2(S) + 2HCl (L)--> Mgcl2(S) + 2H2O(l)
when balancing the equation we count the number of molecules in the reactant side which should balance with molecules in the product side.

7 0

3 years ago

Read 2 more answers

How many carbon atoms are in 6 molecules of carbon dioxide?

o-na [289]

For CO2 there is one atom of carbon and two atoms of oxygen. For H2O, there is one atom of oxyegen and two atoms of hydrogen. A moleclue can Be made of only one type of atom

4 0

3 years ago

Read 2 more answers

The very common mineral shown in this photograph is commonly a pink- to cream-colored mineral with wavy, light-colored lines. it

musickatia [10]

The very common mineral shown in the figure that is referred in this problem that is commonly a pink- to cream-colored mineral with wavy, light-colored lines and does not effervesce would be feldspar. It make up about 41 percent weight of the Earth's crust. It is a group of rocks that contains tectosilicate compounds.

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3 years ago

The N H 2 group makes the molecule an amine. Like alcohols, amines can participate in hydrogen bonding. If the drawn molecule en

lesantik [10]

Answer:

a hydrogen bond between the hydrogen of water and the nitrogen of the amine

a hydrogen bond between the oxygen of water and a hydrogen from the -NH2 group

Explanation:

A hydrogen bond is formed between molecules in which hydrogen is bonded to a highly electronegative element.

In amines, hydrogen is bonded to nitrogen while in water, hydrogen is bonded to oxygen. Both are highly electronegative elements hence hydrogen bonding is possible between amines and water.

This hydrogen bond may involve;

The hydrogen of water and the nitrogen of the amine

The oxygen of water and a hydrogen from the -NH2 group

7 0

3 years ago