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laila [671]
3 years ago
14

Which chemical symbol describes an element? o H2O o 02 o CH4 o H2 SO4

Chemistry
2 answers:
ra1l [238]3 years ago
4 0
H20 is the answer to your question
navik [9.2K]3 years ago
4 0

Answer:

H20

Explanation:

. It is a symbol of water where H = Hydrogen, O = Oxygen and2 Elements in hydrogen and 1 element in oxygen;therefore its known as H2O.

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Which of the alternative energy sources do you think would have the least impact on the environment.
QveST [7]
Solar Power, Microbial fuel cell. These two and I am sure other ways as well Solar power as you guess use the sun as a power energy source with non-waste and long lasting use. Microbial fuel uses the bacteria aka decomposers turn the sugars, nutrients into rich soil while also releasing electrons back into the soil and can be used as a energy source.
7 0
3 years ago
I have science and i have a question that says : an element is a (valuable, pure , rare) substance that is not chemically combin
mote1985 [20]

Answer:

It’s true ( pure).

Explanation:

An element is defined as a pure substance that is not chemically combined with any other elements. An element comprises of mainly the sane type of atoms.

While a compound is a substance that consists of two or more elements which are chemically combined together. This is the main difference between an element and a compound.

3 0
3 years ago
A mechanic needs a radiator to have 50% antifreeze solution. the radiator currently is filled with 4 gallons of 15% antifreeze s
Zanzabum

<span>let x=gallons of current mixture to be drained and replaced with pure antifreeze.
4-x=gallons of current mixture remaining in the car.</span>

<span>
0.15(4-x)+1.00x=0.50 x 4
0.6-.15x+x=2
0.85x=1.4
x=1.4/0.85 =1.65 gal

Thus, 1.65 gallons of current mixture to be drained and replaced with pure antifreeze.</span>

5 0
3 years ago
The main factor which effects the speed of a sound wave is the ____
Radda [10]

Answer:

it depends on the medium and the temperature

Explanation:

3 0
3 years ago
The independent variable has control and affects the
Stella [2.4K]

Answer:

The independent variable is the condition that you change in an experiment. It is the variable you control.

Explanation:

It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment. Sometimes you may hear this variable called the "controlled variable" because it is the one that is changed.

3 0
3 years ago
Read 2 more answers
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