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siniylev [52]
3 years ago
9

I

Chemistry
1 answer:
Damm [24]3 years ago
3 0

Answer: the answer is 18

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What is the mass of 3.75 moles of NaCl
sasho [114]
M (NaCl) = n × M = 3.75 × 58.5 =
219.375 g

M (NaCl) = 23 + 35.5 = 58.5 g/mol
7 0
3 years ago
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1. What is an isomer? How many possible isomers of hexane are there? What are the structural differences between these isomers?
UNO [17]
When two compounds have same molecular formula but different structural formula, they are said to be isomers of each other and this phenomenon is called as isomerism. 

Hexane has six isomers.

The isomers of hexane have a difference in their structure due to parent chain length (chain isomerism). They are also differentiated on the basis of straight chain as in n-hexane and branched chain as in remaining five. Structures along with names are shown below.

8 0
3 years ago
Which of the following is(are) used in the overall reactions for photosynthesis?
Nimfa-mama [501]

Answer:

Photosynthesis takes the energy of sunlight and combines water and carbon dioxide to produce sugar and oxygen as a waste product. The reactions of respiration take sugar and consume oxygen to break it down into carbon dioxide and water, releasing energy.

Explanation:

3 0
3 years ago
Which characteristic might identify a substance as an Arrhenius base?
Scorpion4ik [409]

Answer: a

Explanation: because an Arrhenius acid is a compound that increases the H + ion concentration in aqueous solution. An Arrhenius base is a compound that increases the OH − ion concentration in aqueous solution.

5 0
4 years ago
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Potential energy sample question: A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it
ioda

Answer:

The potential energy is 9800 J.

Explanation:

given information:

mass, m = 50 kg

height, h = 20 m

to calculate the potential energy, we can use the following formula

PE = mgh

where

PE = potential energy (Joule)

m = mass (kg)

h = height (m)

g = gravitational constant (9.8 m/s²)

so,

PE = mgh

    = 50 x 9.8 x 20

    = 9800 J

3 0
3 years ago
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