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prohojiy [21]
3 years ago
10

Select the correct answer from each drop-down menu.

Chemistry
1 answer:
shtirl [24]3 years ago
7 0

Answer:

A (Hypothesis) is scientific knowledge published through direct observation and remains constant scientific knowledge can change when scientists (generate hypothesis)

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A solid has a volume of 64 cm3. Its mass is 288 g. What is its density?
lutik1710 [3]

Answer:

I think the answer is 4500 kilogram/cubic meter

6 0
4 years ago
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Which of the following is an example of a chemical change? Group of answer choices aftershave or perfume on your skin evaporatin
Bingel [31]

Answer:

Gasoline being used in the engine of a car producing exhaust

Explanation:

Hello,

As it is known, gasoline is the component which car engines use to gain energy in order to allow the movement, in such a way, gasoline experiences a combustion chemical reaction, which is a chemical change, induced by the spark that the oxygen provides to allow the combustion. Such chemical process turns both gasoline and oxygen into carbon, nitrogen and sulfur oxides, water, ashes, other side products and the aforesaid energy to move the car.

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3 years ago
A água oxigenada é uma solução que contém a substância peróxido de hidrogênio.Ela é usada como bactericida.Quando aplicamos a ág
Svetllana [295]

Answer:

Ver explicacion

Explanation:

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La descomposición del peróxido de hidrógeno se muestra mediante la ecuación;

2H2O2 (l) ------> 2H2O (l) + O2 (g)

La enzima involucrada en el proceso es la catalasa.

8 0
3 years ago
How can i study for a science quiz for monday
Ket [755]
Going to different website and watching different science videos on the unit you are on

8 0
3 years ago
Based on the octet rule, nitrogen most likely forms a __ion.
Greeley [361]

Answer:

b) N3-

Explanation:

The octet rule stipulates that a chemical specie is stable if it has eight electrons in its outermost shell.

Nitrogen belongs to group 15. This means that it has five electrons in its outermost shell. The formation  N3- means that it accepted three electrons.

This brings the total number of outermost electrons to eight in accordance with the octet rule.

4 0
3 years ago
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