3 years ago

Devibel is a measurement of the amout of pollution. True or false

Chemistry

1 answer:

Ierofanga [76]3 years ago

5 0

If you are meaning decibel and spelled it wrong the answer is false. (Decibel is a degree of loudness.)

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9. t An element that has only 5 electrons in the 4p orbital is located in which group? A. O Group 1 B. Group 17 C. O Group 2 D.

umka2103 [35]

Answer:

B. Group 17

Explanation:

The element is Bromine. Its electron configuration is:

1s2 2s2p6 3s2p6d10 4s2p5

You can see that its last orbital is 4p^5 for 5 electrons in the 4p orbital.

6 0

3 years ago

Please help me with this question I will make you brainliest!! SCIENCE

schepotkina [342]

Answer:

A skateboarder coming down the ramp.

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3 years ago

What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?

Crazy boy [7]

Answer:

Explanation:

mass number = 19 + 20 = 39 (protons + neutrons)

The charge is 0. This is an atom

The symbol = K

Protons: 19

Electrons: 19

Neutrons: 20

8 0

4 years ago

200.0 mL of a 0.845 M solution of KCl is diluted to 600.0 mL. What is the new concentration of the solution?

Ipatiy [6.2K]

M be molar concentration
V be volume

M1=0.845M
V1=200mL=0.2L
V2=0.6L
M2=?

$\\ \tt\rightarrowtail M1V1=M2V2$

$\\ \tt\rightarrowtail 0.845(0.2)=0.6M2$

$\\ \tt\rightarrowtail 0.169=0.6M2$

$\\ \tt\rightarrowtail M2=0.281M$

7 0

2 years ago

How many electrons does strontium give up to achieve a noble-gas configuration?

coldgirl [10]

The answer is 2................ :)

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4 years ago