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3 years ago

Which represents the balanced equation for the beta minus emission of phosphorus-32?

Chemistry

2 answers:

Agata [3.3K]3 years ago

8 0

Answer: The correct option is C.

Explanation: Beta minus ( $\beta ^-$ ) decay is the decay in which a neutron is converted into proton and releases beta particle or generally known as electron.

There is an increase in the Atomic number because one protons is being formed.

In the case of beta-minus decay of phosphorous, the P-nucleus gets changed to Sulfur nucleus. The balanced Chemical equation for this process is:

$^{32}_{15}\textrm{P}\rightarrow ^{32}_{16}\textrm{S}+^0_{-1}\beta$

Hence, the correct option is C.

uranmaximum [27]3 years ago

3 0

Answer : Option C) $P^{32}_{15} ---> S^{32}_{16} +e^ {0}_{-1}$

Explanation : The balanced equation for the beta minus decay for emission of Phosphorus-32 is $P^{32}_{15} ---> S^{32}_{16} +e^ {0}_{-1}$

Where, it is clearly seen that in the beta minus emission a neutron decays into a proton, an electron, and an anti-neutrino.

So, in the phosphorus-32 beta minus decay the product is sulfur-32 along with an electron created from the anti-neutrino.

Therefore, option C is the correct option.

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You are asked to prepare a solution that is 2% by weight ethanol in water. Note that the molecular weight of ethanol is 46.07 g/

Serga [27]

Answer:

0.4429 m

Explanation:

Given that mass % of the ethanol in water = 2%

This means that 2 g of ethanol present in 100 g of ethanol solution.

Molality is defined as the moles of the solute present in 1 kilogram of the solvent.

Given that:

Mass of $CH_3CH_2OH$ = 2 g

Molar mass of $CH_3CH_2OH$ = 46.07 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{2\ g}{46.07\ g/mol}$

$Moles\ of\ CH_3CH_2OH= 0.0434\ moles$

Mass of water = 100 - 2 g = 98 g = 0.098 kg ( 1 g = 0.001 kg )

So, molality is:

$m=\frac {0.0434\ moles}{0.098\ kg}$

Molality = 0.4429 m

3 0

4 years ago

if eleanor starts with 25.00 ml of a weak acid (the concentration is 0.1084 m), then how many ml of 0.1817 m naoh has to be adde

polet [3.4K]

Answer:

14.91 mL

Explanation:

Assuming the weak acid is monoprotic, we can solve this problem using the equation:

C₁V₁=C₂V₂

Where subscript 1 stands for the Volume and Concentration of the weak acid, while 2 stands for those of NaOH.

We input the data:

25.00 mL * 0.1084 M = 0.1817 M * V₂

And solve for V₂:

V₂ = 14.91 mL

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3 years ago

What types of emergency situations could rescue workers be in that would make it difficult for them to get energy to their elect

artcher [175]

Answer:

Large-scale natural disasters

Explanation:

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Large-scale natural disasters are very destructive and devastating. Their impact and effect can range from destruction of infrastructures, properties, social amenities and even ecosystems. When such disasters break out, they destroy things and which leads to difficulty in accessing certain amenities. Rescue workers even find it difficult to access energy for their electrical devices - because there is power outage.

Some of these large-scale natural disasters are earthquakes, tornadoes, hurricanes, floods, etc.

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4 years ago

The energy released by nuclear fission can be used to ________ and turn a turbine to produce ________ energy.

enyata [817]

Heat water; mechanical (the movement of a turbine is based off of mechanical energy, not chemical or potential).

6 0

3 years ago

Read 2 more answers

38 points!! >:D

Sav [38]

Answer: which*