With a 1.0–2.0 Sv dosage of radiation, an individual can expect to A. die.   B. hemorrhage.   C. see no immediate effect.   D. have nausea and hair loss.

%yield = 86.93%

Further explanation

Given

Reaction

CaCN₂+3H₂O=>CaCO₃+2NH₃

Required

The percent yield

Solution

mol CaCN₂(MW= 92 g/mol) :

= mass : MW

= 77 g : 92 g/mol

= 0.834

From equation, mol NH₃ :

= 2/1 x mol CaCN₂

= 2/1 x 0.834

= 1.668

Mass NH₃(theoretical):

= 1.668 mol x 18 g/mol

= 30.024 g

% yield = (actual/theoretical) x 100%

%yield = (26.1/30.024) x 100%

%yield = 86.93%

Answer:

2.2 °C/m

Explanation:

It seems the question is incomplete. However, this problem has been found in a web search, with values as follow:

" A certain substance X melts at a temperature of -9.9 °C. But if a 350 g sample of X is prepared with 31.8 g of urea (CH₄N₂O) dissolved in it, the sample is found to have a melting point of -13.2°C instead. Calculate the molal freezing point depression constant of X. Round your answer to 2 significant digits. "

So we use the formula for freezing point depression:

• ΔTf = Kf * m

In this case, ΔTf = 13.2 - 9.9 = 3.3°C

m is the molality (moles solute/kg solvent)

• 350 g X ⇒ 350/1000 = 0.35 kg X

• 31.8 g Urea ÷ 60 g/mol = 0.53 mol Urea

Molality = 0.53 / 0.35 = 1.51 m

So now we have all the required data to solve for Kf:

• ΔTf = Kf * m

• 3.3 °C = Kf * 1.51 m

• Kf = 2.2 °C/m

Answer: Protons inside the nucleus of an atom are held together despite having the same positive charge because of the strong nuclear force, also known as the strong nuclear interaction or simply the strong force. The strong force is one of the fundamental forces in nature, along with gravity, electromagnetism, and the weak nuclear force. It is responsible for binding protons and neutrons (collectively known as nucleons) together in the nucleus of an atom.

Explanation: The strong force is an extremely powerful force at very short distances, acting over a range of about 1 femtometer (10^-15 meters). This force is much stronger than the electrostatic repulsion between protons due to their positive charges. So, even though protons have the same positive charge and would naturally repel each other due to the electromagnetic force, the strong nuclear force overcomes this repulsion and binds them together within the nucleus, keeping the nucleus stable.

Final answer:

Protons inside the nucleus of an atom are held together by the nuclear force, also known as the strong nuclear force. This force is strong enough to override the repulsive electromagnetic force between protons.

Explanation:

Protons inside the nucleus of an atom, despite having the same positive charge and thus naturally repelling each other, are held together fundamentally due to a force called the nuclear force, sometimes referred to as the strong nuclear force or strong interaction.

This is one of the four basic forces of nature, the others being gravity, electromagnetic force, and the weak nuclear force. The nuclear force is so strong that it overrides the repulsive electromagnetic force between protons thereby holding the protons together inside the nucleus.

Learn more about Nuclear Force here:

brainly.com/question/34703934

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Answer:

i

Explanation: