All categories

3 years ago

The nucleus of a helium atom is identical to

2 answers:

7 0

Answer: A helium atom is an atom of the chemical element helium. Helium is composed of two electrons bound by the electromagnetic force to a nucleus containing two protons along with either one or two neutrons

hope its help

sveticcg [70]3 years ago

7 0

Answer: The nucleus of a helium atom is identical to an alpha particle.

You might be interested in

2KI + Pb(NO3)2 → 2KNO3 + PbI2 Determine how many moles of KNO3 are created if 0.03 moles of KI are completely consumed.

ElenaW [278]

2:2 so the same proportion
0,03

6 0

3 years ago

Read 2 more answers

Analyze the diagram showing the changing states of matter. Drag the item from the item bank to its corresponding match.

iVinArrow [24]

The correct matches for changes of state are:

1 or 3 : Arrow that shows particles getting closer together
gas: State of matter that would fill any container
liquid: State of matter with definite volume but NOT shape
2 or 4: Arrow that shows particles gaining energy
solid: State of matter with definite shape

<h3>What is change of state?</h3>

Change of state is the process whereby matter in one physical state is converted to matter in another state by the addition or removal of heat.

The process of change of state are:

Melting: solid to liquid due to addition of heat
Vaporization: liquid to gas due to addition of heat
Sublimation: solid to gas due to addition of heat
Freezing: liquid to solid due to removal of heat
Condensation: gas to liquid due to removal of heat
Deposition: gas to solid due to removal of heat

Considering the given diagram, the correct matches are:

1 or 3 : Arrow that shows particles getting closer together
gas: State of matter that would fill any container
liquid: State of matter with definite volume but NOT shape
2 or 4: Arrow that shows particles gaining energy
solid: State of matter with definite shape

In conclusion, change of state of matter occurs due to heat changes.

Learn more about change of state at: brainly.com/question/1078692

#SPJ1

6 0

1 year ago

The mole fraction of a non-electrolyte (MM 40.0 g/mol) in a saturated aqueous solution is 0.310. What is the molality of the sol

jeka57 [31]

<u>Answer:</u> The molality of non-electrolyte is 24.69 m

<u>Explanation:</u>

We are given:

Mole fraction of saturated aqueous solution = 0.310

This means that 0.310 moles of non-electrolyte is present.

Moles of water (solvent) = 1 - 0.310 = 0.690 moles

To calculate the mass from given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of water = 0.690 moles

Molar mass of water = 18 g/mol

Putting values in above equation, we get:

$0.690mol=\frac{\text{Mass of water}}{18g/mol}\\\\\text{Mass of water}=(0.690mol\times 18g/mol)=12.42g$

To calculate the molality of solution, we use the equation:

$\text{Molality}=\frac{n_{solute}\times 1000}{W_{solvent}\text{ (in grams)}}$

Where,

$n_{solute}$ = Moles of solute (non-electrolyte) = 0.310 moles

$W_{solvent}$ = Mass of solvent (water) = 12.42 g

Putting values in above equation, we get:

$\text{Molality of non-electrolyte}=\frac{0.310\times 1000}{12.42}\\\\\text{Molality of non-electrolyte}=24.96m$

Hence, the molality of non-electrolyte is 24.69 m

4 0

3 years ago

BRAINLIEST TO CORRECT what would the cook time for 2 half-lives of the popcorn?

Svetlanka [38]

Answer:

Pop for two minutes in the microwave, and enjoy the perfect balance of buttery and salty taste in every bite. Try this delicious salty snack for backyard barbeques, movie nights, birthday parties or an office snack. Choose ACT II Butter Popcorn for the best value in popcorn.

Explanation:

3 0

2 years ago

For the following reaction, 2 SO2(g) + O:(g) 2 SO,(g) the equilibrium constant, K, is 1.32 at 627°C. What is the equilibrium con

cupoosta [38]

Answer:

1.15

Explanation:

2SO₂ + O₂ ⟶ 2SO₃; K =1.32

SO₂ + ½O₂ ⟶ SO₃; K₁ = ?

When you divide an equation by 2, you take the square root of its equilibrium constant.

K₁ = √1.32 = 1.15

The equilibrium constant is 1.15.

8 0

3 years ago