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elena-s [515]
2 years ago
15

Help me answer this please

Chemistry
1 answer:
Vlad1618 [11]2 years ago
3 0
Its a scam dont press the link
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16. As he developed his periodic table, Mendeleev grouped the elements lithium,
Aleonysh [2.5K]

Answer:

the reactivity and the valence electrons

Explanation:

the reactivity of the elements would have played a significant role in why such elements were grouped together. the number of valence electrons dictates how reactive an element is - the less valence electrons the more reactive it is. the column, group 1 in which these elements are put together in, show that each of the elements have 1 valence electrons and are therefore reactive.

you can go on to further explain what valence electrons are, explain what the group numbers are associated with the valence electrons and how valence electrons effect reactivity. further this, talk about how the three elements have the same number of valence electrons and therefore were grouped together

8 0
3 years ago
0.00632 into a scientific notation
ddd [48]

Answer:

6.32 × 10⁻³

3.2560008× 10⁷

5.630× 10⁰

9.5002× 10¹

Explanation:

Scientific notation is the way to express the large value in short form.

The number in scientific notation have two parts.

The digits (decimal point will place after first digit)

× 10 ( the power which put the decimal point where it should be)

For example:

0.00632

In scientific notation =  6.32 × 10⁻³

32,560,008

In scientific notation  = 3.2560008× 10⁷

5.630

In scientific notation  = 5.630× 10⁰

95.002

In scientific notation  = 9.5002× 10¹

6 0
3 years ago
Read 2 more answers
If the mass of an object is 10 kg and the acceleration of an object due to
mars1129 [50]
Hmm the answer is 2.454

No explanation needed it’s just 2.454
5 0
2 years ago
The US National Debt Clock showed the outstanding public debt to be $16,213,166,914,811 on October 28, 2012. How many stacks lik
Serggg [28]

Answer: 5.74×10^8 stacks

Explanation:

The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick.

1 stack would contain $2.83x 10^4

No. of stacks to pay off debt=

$16,213,166,914,811/2.83 ×10^4

= 5.74 × 10^8 stacks

6 0
3 years ago
Immicible liquids can be separated by using
Fiesta28 [93]

Answer:

Two immiscible liquids, oil and water, can be separated by using Separating Funnel. The mixture of oil and water forms two separate layers because they are completely insoluble in each other.

7 0
2 years ago
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