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laiz [17]
3 years ago
7

The model represents a

Chemistry
1 answer:
brilliants [131]3 years ago
5 0
I don’t understand your question. A model could represent a graph, a Venn diagram, a line graph, a circle graph and more!
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Which factors are needed for organisms to live earth
meriva

Answer: sunlight, water, air, habitat, and food.

Explanation: we are all living organisms and we all have our five basic necessities for survival; sunlight, water, air, habitat, and food.

3 0
3 years ago
When placed between oppositely charged metal plates, the region of a water molecule attracted to the negative plate is the *blan
Gala2k [10]

Answer : The correct option is (A) Hydrogen region of the molecule.

Explanation :

As we know that the water molecule has two hydrogen atom and one oxygen atom. The hydrogen atom has partial positive charge and oxygen has partial negative charge.

In the charged plate, the negative attracts positive and positive attracts negative. So, the hydrogen atom attracted to the negative plate and the oxygen atom attracted to the positive plate.

When water molecule placed between oppositely charged metal plates which is positively charged, then the hydrogen atom which is positively charged attracted towards the negative plate.

3 0
4 years ago
What coefficients must be added to balance the following reaction __Sn+___H3PO4___=H2+___Sn3(PO4)4
BARSIC [14]
Answer 3Sn+ 4H3pO4= 6H2+Sn(PO)4

1 Sn                                  3 Sn
3 H                                    2 H
1 P                                    4 P
4 O                                    16 O
 then you have to make the numbers the same for each side

so you get by putting the 3 infront of Sn 4 infront of the H3PO4  and 6 infront of the H2
3 Sn                                   3 Sn
12 H                                    12 H
4 P                                      4 P
16 O                                     16 O
5 0
3 years ago
What is an atomic theory?
Dovator [93]
Answer is b..............…
4 0
4 years ago
How are physical and<br>chemical changes different?​
astra-53 [7]
Physical changes happen when you do/mix something that can be reversed. Best example is ripping a paper, you can just tape it back together so it is just an observable thing that changes, which is a physical change. Chemical changes happen when you mix things and they make a new substance and can’t be reversed. The best example of this is the Statue of Liberty, which changed in color due to the chemical change between the oxygen and copper, which created a new substance (rust) which made it green instead of copper.
Sorry for the long answer but hope this helps!
5 0
4 years ago
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