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3 years ago

New elements can be made by changing the number of neutrons in an atom. True False

2 answers:

andrey2020 [161]3 years ago

4 0

False.
New elements can't be made by changing netrons of a particular element. This would result in the creation of isotopes of that particular element. We can't consider isotopes as different elements.

If you found my answer good, please mark it as the Brainliest Answer

Feliz [49]3 years ago

4 0

The answer should be false

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Why does the atmosphere have holes in it? A. Pollution B. Fuel from Cars/Machines

a_sh-v [17]

Answer:

the answer is d .

Explanation:

all of these have pollutants and chemicals in them , damaging the ozone with carbon dioxide .

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3 years ago

In the laboratory you are asked to make a 0.565 m sodium bromide solution using 315 grams of water. How many grams of sodium bro

Scorpion4ik [409]

Answer : The mass of sodium bromide added should be, 18.3 grams.

Explanation :

Molality : It is defined as the number of moles of solute present in kilograms of solvent.

Formula used :

$Molality=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Mass of solvent}}$

Solute is, NaBr and solvent is, water.

Given:

Molality of NaBr = 0.565 mol/kg

Molar mass of NaBr = 103 g/mole

Mass of water = 315 g

Now put all the given values in the above formula, we get:

$0.565mol/kg=\frac{\text{Mass of NaBr}\times 1000}{103g/mole\times 315g}$

$\text{Mass of NaBr}=18.3g$

Thus, the mass of sodium bromide added should be, 18.3 grams.

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3 years ago

Which is the following is a vector quality? ans: 1)mass 2)speed 3)time 4)plane area

Brut [27]

Answer:

speed

Explanation:

hope it helps

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2 years ago

The piece of iron that miguel measured had a mass of 51.1 g and a volume of 6.63 cm 3 . what did miguel calculate to be the dens

likoan [24]

Given:
Mass, m = 51.1 g
Volume, V = 6.63 cm³

By definition,
Density = Mass/Volume
= (51.1 g)/(6.63 cm³)
= 7.7074 g/cm³

In SI units,
Density = (7.7074 g/cm³)*(10⁻³ kg/g)*(10² cm/m)³
= 7707.4 kg/m³

Answer: 7.707 g/cm³ or 7707.4 kg/m³

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3 years ago

The decayed organic material that gives soil its dark brown or black color is called

sergiy2304 [10]

Option B. Humus. Its dark color is due to the high content of carbon.

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3 years ago

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