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weeeeeb [17]
4 years ago
15

Give examples of Elements.

Chemistry
2 answers:
pishuonlain [190]4 years ago
8 0

Answer: oxygen, hydrogen, sodium, chlorine, lead, iron. Examples of compounds include water ( or hydrogen oxide ) H2O; and Sodium Chloride, NaCl.

Explanation: plz mark brainest

NemiM [27]4 years ago
7 0

Answer: H Hydrogen, Ca Calcium , B Boron , C Carbon

Explanation: Elements are pure substances that is composed primarily of only one type of atom. Elements can be classified into metals, nonmetals and metalloids.

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Global warming is a theory accepted by a majority of scientists.How can local environmental changes have global effects?
meriva

The local environmental changes are having a global effect, and that is well documented and constantly witnessed. The reason why local environmental changes can have such a big impact is that the gasses move freely throughout all of the planet, they move horizontally with the winds, and they also move vertically higher into the atmosphere which is in constant movement.

This results in a situation where one area produces lot of pollution, but another area is feeling the effects because the air masses moved big portion of the polluters there.

A nice example are China and Mongolia. China is one of the two major polluters in the world, while Mongolia barely has any industry especially when considered its size and population. The air masses though are moving from the southeast towards northwest, thus big portion of the pollution in the eastern part of China goes into Mongolia. Because of this, despite not being a big polluter, Mongolia has one of the worst air qualities in the world.

Also, we can witness that the holes in the ozone layer are mostly around the poles, despite the sources of the chemicals that are damaging it are on totaly different locations.

3 0
3 years ago
A balloon has a volume of 125mL with 10 pumps of gas. The balloon is reduced in volume to 88mL, how much gas is in the balloon?
blagie [28]

Answer:

7.04

Explanation:

i think

6 0
3 years ago
Vitamin B information please​
Montano1993 [528]

B vitamins play a vital role in maintaining good health and well-being. As the building blocks of a healthy body, B vitamins have a direct impact on your energy levels, brain function, and cell metabolism.

Hope this helps; have a great day!

8 0
3 years ago
Which statements accurately describe soap? Select one or more: check_boxSoaps should be weakly alkaline in solution. check_box_o
Firdavs [7]

Answer:

Soaps are a mixture of fatty acid salts and glycerol.

Explanation:

Soap is made from the reaction

Fat and oil + caustic alkali = fatty acid salt + glycerol(propane-1,2,3-triol)

4 0
3 years ago
Show a numerical setup for calculating the number of moles in the sample of CaCO3
Delvig [45]

The numerical setup is

<span>11<span>g</span></span>CO2×1 mol CO2/44.01g CO2=0.25 mol CO2

gCO2 cancels out so it is

11 x 1 mol CO2/44.1 CO2= 0.25 mol CO2

6 0
4 years ago
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