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VMariaS [17]
3 years ago
6

What group are nonmetals highlighted

Chemistry
1 answer:
Roman55 [17]3 years ago
8 0
Nonmetals i believe are last groups


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A solution was made by mixing 60.5 g of glucose (C6H12O6) with enough water to make 325 ml of solution. What is the percent (mas
IgorC [24]

mass percent concentration = 15.7 %

molar concentration of glucose solution 1.03 M

Explanation:

To calculate the mass percent concentration of the solution we use the following formula:

concentration = (solute mass / solution mass) × 100

solute mass = 60.5 g

solution mass = solute mass + water mass

solution mass = 60.5 + 325 = 385.5 g (I used the assumption that the solution have a density of 1 g/mL)

concentration = (60.5 / 385.5) × 100 = 15.7 %

Now to calculate the molar concentration (molarity) of the solution we use the following formula:

molar concentration = number of moles / volume (L)

number of moles = mass / molecular weight

number of moles of glucose = 60.5 / 180 = 0.336 moles

molar concentration of glucose solution = 0.336 / 0.325 = 1.03 M

Learn more about:

molarity

brainly.com/question/10053901

#learnwithBrainly

5 0
4 years ago
3. The basic unti of matter *<br> proton<br> neutron<br> electron<br> atom
mamaluj [8]

Answer:

Your answer is ATOM

Explanation:

Atoms consist of a nucleus made of protons and neutrons orbited by electrons. Atoms are the basic units of matter and the defining structure of elements.

Basically, they are the building block of life because everything made of matter has atoms

8 0
4 years ago
Given the reaction:CO2 + 6 H2O==&gt; C6H12O6 + 6 O2
kari74 [83]
For every 1 mole of C6H12O6, you need 6 moles of water. Multiply the 2.5 moles you are trying to make by the 6 of water you need, and 4) 15 is your answer.
5 0
4 years ago
Read 2 more answers
Given the equation:
svetoff [14.1K]

Answer:

4 moles of HCl will be required to produce 2 moles of H2.

Explanation:

A balanced chemical equation gives the stoichiometric ration of moles of reactants required to produce a certain number of moles of products. The ratio of moles of reactants to moles of products is known as the mole ratio and is constant for a given chemical reaction.

In the given balanced equation of reaction shown below:

Zn + 2HCl → ZnCl2 + H2

The mole ratio of HCl and H2 is 2:1. This means that in this reaction between Zinc metal and hydrochoric acid to produc zinc chloride and hydrogen gas, every two moles of hydrochloric acid used in the reaction will result in the production of one mole of hydrogen gas.

Therefore for two moles of H2 to be obtained from the reaction, twice the number of moles of HCl is required.

Moles of HCl required = 2 × 2 moles = 4 moles of HCl.

7 0
3 years ago
2 ways friction is helpful and 2 ways it does not
iris [78.8K]

Benefits of friction.

1. Walking. Friction between the soles of our  shoes and the ground enables us to walk. The sole of the shoe is held to the ground through friction. This is what is termed as "grip" of the shoe. The more grip a shoes offers, the better and faster we can walk.

2. Writing. Writing using a pen requires friction. It is impossible to hold a pen in the hand without friction because it would slip out. Also the graphite point of the pencil would not make a mark on the paper without friction.

Drawbacks of friction

1. Drag. An aircraft taking off experiences significant friction between it and the air resulting in drag, so much fuel has to be used to  create energy to overcome the wind resistance.

2. Surface hindrance. Friction makes moving something heavy from  one part of a room to another very difficult. Sliding a large box across the flour takes a lot of energy due to friction between the box and the floor.


8 0
3 years ago
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