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3 years ago

What new characteristic did John Delton add to the model of the atom BRAINLY WHOEVER GETS IT RIGHT PLEASE IM ON A TIMER

Chemistry

1 answer:

madam [21]3 years ago

7 0

Answer: An atom can join with other kinds of atoms.

PLEASE GIVW ME BEAINLY LOLLL

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Based on your observations and your understanding about how heat moves (from hot to cold), write a hypothesis that describes whi

Oksi-84 [34.3K]

Answer:

wrapping a boiled water keeps the water hot..cus it's wrapped and no air can go out

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2 years ago

What is the lewis structure for al?

bogdanovich [222]

The abbreviation Al, with one dot on top of the abbreviation, one on the left, one on the right.

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3 years ago

The half-life of 131I is 80 days. How much of a 500.0 mg sample remains after 3 half lives?

I am Lyosha [343]

Answer:

62.5 mg

Explanation:

Just multiply the original amount by 1/2 three times:

500 mg x 1/2 x 1/2 x 1/2 = 62.5 mg

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2 years ago

If 4.12 l of a 0.850 m-h3po4 solution is be diluted to a volume of 10.00 l, what is the concentration of the resulting solution?

statuscvo [17]

The process in which the concentration of the solution is lessened by the addition of water is said to be dilution and equation of dilution relates the initial concentration and volume of stock solution with the final concentration and volume of the solution.

Formula is given by:

$C_{1}V_{1}=C_{2}V_{2}$ (1)

where,

$C_{1}$ is the initial concentration

$V_{1}$ is the initial volume

$C_{2}$ is the final concentration

$V_{2}$ is the final volume

Now,

$C_{1}$ = 0.850 M

$V_{1}$ = 4.12 L

$C_{2}$ =?

$V_{2}$ = 10.00 L

Substitute the give values in formula (1),

$0.850 M\times 4.12L=C_{2}\times 10.00 L$

$C_{2} =\frac{0.850 M\times 4.12L}{10.00 L}$

= $0.3502 M$

Thus, the final concentration of the $H_{3}PO_{4}$ solution = $0.3502 M$

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3 years ago

What are the elements in group two called

mina [271]

Answer: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Hopefully i helped

Explanation:

7 0

2 years ago

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