Beta decay converts a neutron to a proton and emits a high-energy electron, producing a daughter nucleus with the same mass number as the parent and an atomic number that is higher by 1.

3 0

3 years ago

A solution is made

Anna11 [10]

Answer:

99.3%

Explanation:

The percent by mass of the solute can be expressed as:

% mass = $\frac{MassSolute}{MassSolute+MassSolvent}$ * 100%

And for this problem:

Mass of Solute = Mass of sodium lithium chloride = 29 g

Mass of Solvent = Mass of Water

So to calculate the percent by mass first we need to calculate the mass of water, to do so we use its density (1 g/L):

202 mL is equal to (202/1000) 0.202 L.

Density water = mass water / volume

1 g/L = mass water / 0.202 L

Mass water = 0.202 g

Now we have all the data required to calculate the % mass:

% mass = $\frac{29g}{29g+0.202g}$ * 100 % = 99.3%

3 0

3 years ago

Read 2 more answers

Hey sample of helium occupies 235 mL at 788 tour and 25°C. If the sample is condensed into a 0.115 L flask what will be the new

7nadin3 [17]

the system is in constant temperature

so it follows Boyle's law

i.e.P1V1=P2P2

where P1=initial pressure=788 tour

P2=final pressure= ?

V1=initial volume=235 ml

V2=final volume=0.115 ml

3 0

3 years ago