CHEMISTRY HIGH SCHOOL

During fusion, the hydrogen in the Sun is?a. entirely converted to energy.

b. entirely converted to helium.

c. partially converted to energy.

d. partially converted to deuterons.

Answers

Answer 1
Answer: i am not sure but i think the answer is no C
Answer 2
Answer:

it is c partially converted to energy

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Salt acts as an antifreeze.
a. True
b. False

Answers

Answer:

It's true

Explanation:

An example can be observed when the people add salt on the road surface to avoid icing. The salt water mixture is frozen at approximately a temperature of -21°C and not at a temperature of 0°C as it would be in the case of water. Salt when dissolved in water releases heat, thereby contributing to defrost ice. This is the same principle that is used for car antifreeze, which is to lower the freezing point.
A. I think that is the a answer. Not to sure

show me the steps for solving this problem how many grams of O2 are required to burn 46.0 grams of C5H12

Answers

(MM)C5H12=5x12+12x1=72g/mol
(MM)O2=2x16=32g/mol
Acoording to equation:
C5H12 + 8O2 => 5CO2 + 6H2O

The proportion between C5H12 and O2 is 1:8 in mol

So: 72/16=46/x finale x=10,2g of O2

How is the periodic table constructed ?

Answers

Before the periodic table, there were a bunch of symbols, number, letters etc (In all kinds of languages) that represented the elements. Scientists around the world saw that a chart of the elements needed to be universally accepted and finalized. A guy named Mendeleev presented this idea to the scientific community. Mendeleev was also the first to order elements according to atomic number rather than atomic weight. The modern day periodic table was not published by him, it was developed with the help of the entire scientific community. Honestly, there isn't a specific way to tell you how the periodic table was constructed, scientists developed thousands of tables that represented the elements. And just to let you know, the modern day periodic table is constantly going through changes as we discover more and more about elements, atoms, molecules etc. so in the near future it wouldn't be surprising if we saw something completely different than what we see today.
The Periodic Table is in order of electrons, and the columns are set up to show the amount of electrons in the outer most orbit.

What does w represent

Answers

W is a variable that can be used to represent whole numbers or the first letter of an object in the problem. Example: If a house has 4 windows on each side and there’s 4 sides of the house, find W, or the amount of windows there are total. An example for how it could also be used as a whole number is: Find W in this problem, or the whole number. Hope this helps! :)

Answer:

It is used to represent whole numbers

Explanation:

A chemical reaction in which compounds break up into simpler constituents is a _______ reaction.a. combination
b. decomposition
c. double replacement
d. substitution

Answers

the awnser to ur question is B

B. Decomposition, I remember reading this in my student workbook. Hope this helped!

The closeness of a measurement to the actual value of what is being measured

Answers

Hey!

This is known accuracy. Think of accuracy as like shooting at the bulls eye on a target.

However think of precision like if all your darts fell on the lower left side of the target. Precision is just how close together the measurements are with each other.
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