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pashok25 [27]
3 years ago
7

Chemical changes involve the breaking and making of chemical bonds. The answer is always

Chemistry
1 answer:
larisa [96]3 years ago
6 0

Answer:

Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change.

Explanation:

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At a certain temperature the speeds of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s, 2.6 m/s, 2.7 m/s, 3.3 m/s, and
iren [92.7K]

Answer:

root-mean-sqaure = 2.77 m/s

average = 2.72 m/s

The root-mean-square is always the largest because it takes account of the variance of the spread of the data. The increase is related to the fact that the data varies to sample.

Explanation:

The rootmean-square (R) is the square root of the squares of the valeus divided by the number of the datas.

R = \sqrt{\frac{x1^2 + x2^2 +...+xn^2}{n} }

R = \sqrt{\frac{(2.0)^2 + (2.2)^2 + (2.6)^2 + (2.7)^2 ^(3.3)^2 + (3.5)^2}{6} }

R = √(46.03)/6

R = 2.77 m/s

The average speed is the sum of the speeds divided by the number of datas:

A = \frac{2.0 + 2.2 + 2.6 + 2.7 + 3.3 + 3.5}{6}

A = 16.3/6

A = 2.72 m/s

5 0
4 years ago
Read 2 more answers
Which of the following is true for balancing equations?
algol [13]

Answer:

A.

Explanation:

An equation with the equal amount and proportion of atoms of each element on both sides of the reaction is commonly referred to as a balanced chemical equation.

The law of conservation of matter asserts that no observable and empirical change in the amount of matter occurs within a conventional chemical process. As a result, each element in the product would have the same equal amount or numbers of atoms as the reactants.

5 0
3 years ago
What is the difference between metallic and non metallic oxides?​
Sveta_85 [38]

Answer:

Metal oxides are compounds composed of metal ions and oxide ions. Nonmetal oxides are compounds composed of nonmetal atoms and oxygen atoms. The main difference between metal oxides and non metal oxides is that metal oxides are basic compounds whereas nonmetal oxides are acidic compounds.

Explanation:

have a great day ahead

tC

4 0
3 years ago
Read 2 more answers
Use a periodic table to help you answer these questions if needed.
yuradex [85]

Answer:

2 Al and 3 S

Explanation:

Al2S3 so 2 Al and 3 S

3 0
1 year ago
I need help on dis chem shi if y’all can answer fa me I would appreciate dat
elena55 [62]
I think it’s A I’m not 100% sure but I mean it’s worth a try
3 0
3 years ago
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