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Ghella [55]
3 years ago
7

What is the name of the element with the atomic number 79

Chemistry
1 answer:
natima [27]3 years ago
6 0
Look it up, it’s not that hard.
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Look at the four chemical reactions.
Schach [20]

Answer:

The answer is Reaction 2

Explanation:

5 0
3 years ago
A water bottle has a mass of 14.0g. Given a density of 1.38g/cm^3, what is the volume of the plastic used to make the water bott
Kipish [7]

Answer:

\boxed{\sf Volume \ of \ plastic \ used = 10.14 \ cm^3}

Given:

Mass = 14.0 g

Density (\rho) = 1.38 g/cm³

To Find:

Volume (V)of the plastic used to make water bottle

Explanation:

Formula:

\boxed{ \bold{Density \ (\rho) = \frac{Mass \ (m)}{Volume \ (V)}}}

Substituting value of m & density in the formula:

\sf \implies 1.38 =  \frac{14.0}{V} \\  \\   \sf \implies V =  \frac{14.0}{1.38} \\  \\   \sf \implies V = 10.14 \ cm^3

\therefore

Volume of the plastic used to make water bottle = 10.14 cm³

6 0
3 years ago
1.If 6 moles of KNO3 should be produced in a reaction, but only 4.78 mol KNO3 are produced, what is the % yield?
irakobra [83]

Answer:

79.7%

Explanation:

Percent yield of reaction is defined as the ratio between theoretical yield of a reaction and actual yield obtained.

In the problem, theoretical yield are 6 moles of KNO₃ and actual yield are 4.78 moles. Thus, percent yield is:

4.78 mol / 6 mol × 100 =<em> 79.7%</em>

3 0
3 years ago
Which sound frequency with a human ear be able to detect? Select ALL correct answers.
Allisa [31]

Answer:

100 HZ 1,000 HZ 10,000 HZ there you go :)

5 0
3 years ago
Read 2 more answers
Give an example of an unbalanced force.
Margarita [4]
An example is when on a seesaw if a kid is on one side and an adult is on the other then it is unbalanced because the adult weighs more
5 0
3 years ago
Read 2 more answers
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