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sveta [45]
4 years ago
6

REALLY need help plz

Chemistry
2 answers:
strojnjashka [21]4 years ago
7 0

2,000 meters = 2 kilometers

Meters and kilometers are used in the metric system.

If we know that 1,000 meters = 1 kilometer, we can double 1 and we will get 2. Therefore, 2,000 meters = 2 kilometers.

Sedbober [7]4 years ago
3 0

Answer: 2, you divide the value by 1000, so... 2000/1000 = 2.

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Which event is caused by gravity?​
Oxana [17]

Answer:

C

Explanation:

Cause waves causes gravity to make higher waves

6 0
3 years ago
If fluorine 20 undergoes beta decay , what will it become ?
e-lub [12.9K]
Fluorine 20 (F - Atomic number 9 and atomic mass 20). Firstly we need to know what is beta decay. Beta decay occurs when one neutron changes into a proton and an electron therefore the atomic mass will remain the same as even though we loose a neutron it is replaced by a proton, the atomic number is always raised by 1 when one beta decay occurs. The produced electron is shot out of the nucleus at an incredible speed. This speedy electron we call a beta particle.

Ok now the reaction.

 20       20        0
F  -> Ne    +     e
 9         10       -1

Remember the atomic number determines the nature of the element ( i.e what elemnt it is).
Hope this helps :).
7 0
3 years ago
a scientists finds an organism that cannot move. it has many cells, produces spores, and gets food from its environment. in whic
lord [1]

The correct answer is : The Organism belongs in Kingdom Fungi


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3) They can get food by releasing digestive juices into their environment.

3 0
4 years ago
The number of neutrons in the nucleus of an atom can be calculated by
Bess [88]
3 mass number- proton number
6 0
4 years ago
A student performs three trials of a titration of an acid with an unknown concentration. She compares her measured concentration
Viktor [21]

Answer:

There are many errors possible while titrating the acid of an unknown concentration with a base like NaOH.

Main error that leads to the error in results is misreading of the end point volume .

End point is when the reaction between the analyte and solution of known concentration has stopped .

Sometimes Burette is not straight enough to read the volume of the end point. One way to misread the volume of burette is by looking at the burette volume at an angle .

From above , volume seems to be higher. Indicators are used to indicate the color change of the reaction. In Acid-Base titrations , indicators first lighten up then changes its color.

So, error may have occurred in wrongly judging of the end point by color change of the indicator .

4 0
3 years ago
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