........PLEASE HELP........

Answer: because helium molecules get bigger when they heat up, so if your balloons keep getting hotter, they will eventually pop.

Explanation:hope these gave u a clue and have a wonderful Christmas break ❄️

Explanation:

Because helium molecules grow bigger as they are heated up and eventually they popped out

Answer:

35.235

Explanation:

I plugged 78.3x0.45 it into a calculator

Sucrose solution is an example of sugar solution. Details about a solution can be found below.

A solution is a mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.

A solution is formed when a solute substance dissolved in a solvent.

For example; sucrose is a solute molecule that dissolves in water to form a sucrose solution.

It is important to note that sucrose solution is hypertonic to water i.e. it is a more concentrated solution. There is a net movement of water molecules, by osmosis from the water outside to the sucrose solution.

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Answer:

pN₂ = 695 torr; pO₂ = 625 torr

Explanation:

Step 1: Calculate the moles of each gas

The molar mass of N₂ is 28.01 g/mol.

56 g × 1 mol/28.01 g = 2.0 mol

The molar mass of O₂ is 32.00 g/mol.

56 g × 1 mol/32.00 g = 1.8 mol

Step 2: Calculate the total number of moles

n = nO₂ + nN₂ = 1.8 mol + 2.0 mol = 3.8 mol

Step 3: Calculate the partial pressure of each gas

We will use the following expressions.

pN₂ = P × X(N₂)

pN₂ = 1320 torr × (2.0 mol/3.8 mol)

pN₂ = 695 torr

pO₂ = P × X(O₂)

pO₂ = 1320 torr × (1.8 mol/3.8 mol)

pO₂ = 625 torr

Answer:

B. Light

Explanation:

Light is converted into energy during photosynthesis

Answer:

Sulfur

Explanation:

it has 16 proton and 2- charges

Answer: The energy released when 4.81 mol of water freezes is 28.9kJ

Explanation:

Latent heat of fusion is the amount of heat required to convert 1 mole of solid to liquid at atmospheric pressure or energy released when 1 mole of liquid freezes to solid at atmospheric pressure.

[tex]\Delta H_{fusion}[/tex] = enthalpy change for fusion = 6.008 KJ/mole

Energy released when 1 mole of water freezes = 6.008 kJ

Energy released when 4.81 moles of water freezes = [tex]\frac{6.008 kJ}{1}\times 4.81mol=28.9kJ[/tex]

Therefore, the energy released when 4.81 mol of water freezes is 28.9kJ

Answer:

C) first

Explanation:

Answer:

Electrons

Explanation:

Answer:

Igneous rock to metamorphic rock

Metamorphic rock to igneous rock

Sedimentary rock to metamorphic rock

Explanation:

In changing a rock through the listed processes heat is highly required.

Transformation from a rock to igneous rocks requires the most heat because the rock body must be molten.

Answer:

it would be balanced forces.

Explanation:

Balanced forces acting on an object do not change the objects motion.

Answer:

40

Explanation:

8 + 8 + 8 + 16

The equilibrium constant K : 0.089

Given

Reaction

H₂O(g)+Cl₂O(g)⇔2HClO(g)

[H2O]=0.077M,[Cl2O]=0.077M,[HClO]=0.023M

Required

the equilibrium constant

Solution

The equilibrium constant or Kc is the value of the concentration product in the equilibrium state of the substance in the right segment divided by the product of the substance in the left section, each of which has a reaction coefficient raised  

[tex]\tt K=\dfrac{[HClO]^2}{[H_2O][Cl_2O]}\\\\K=\dfrac{0.023^2}{0.077\times 0.077}\\\\K=0.08922[/tex]

Answer:

ummm molecules i have no idea- i tried tho..

Explanation:

is known as a diatomic element hydrogen is the lightest element has an atomic number of one uses the symbol H at standard temperature and pressure hydrogen is an odorless and colorless gas it is combustible and produces water when it burns in air hydrogen is also the most abundant element in the universe with 90% of atoms in the universe being made of hydrogen main sequence Stars such as the sun burn hydrogen as fuel

Explanation:

Electromagnetic waves are waves which can travel through the vacuum of outer space. Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component.

Answer:

When looking at the radiation emitted by distant stars or galaxies, scientists see emission spectra 'shifted' towards the red end of the electromagnetic spectrum—the observed wavelengths are longer than expected. ... Something causes the wavelength of the radiation (emitted by faraway stars and galaxies)

Answer: Without oxygen, brain cells cannot make enough ATP.

Explanation:

Hypoxia is a condition that occurs due to low levels of oxygen. In conditions such as holding of breath for a long period of time, the oxygen carrying haemoglobin ( oxyhaemoglobin) breaks down, releasing oxygen to the body tissues, which constantly consumes oxygen keeping the levels low.

In the presence of decreased oxygen supply, autoregulatory mechanisms that control the blood flow to the brain by adjusting the diameter of the arterioles fails. The consequent rapid decrease in the cerebral blood supply leads to hypoxia and lack of glucose( decreased ATP production). If severe hypoxia is sustained for more than a few minutes, this could lead to irreversible brain damage.

Therefore, It may be harmful when people compete to see who can hold their breath the longest underwater.

Without oxygen, brain cells die as a result of the cells being unable to

metabolize glucose.

The brain is an important organ that controls almost all the activities that

takes place in the body. They have cells which converts the glucose to

energy which is needed for day to day activities.

When there is no oxygen, glucose isn't metabolized and energy is deficient.

The brain cells won't be able to function and then causes its cells to die

thereby resulting in brain damage.

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Answer:

Decomposition

Explanation:

One reactant has formed two products

Answer:

becomes negatively charged

Explanation:

this is because when an object receives electrons it becomes negatively charged and the object that loses electrons becomes positively charged.

Answer:

First one because by adding more electrons it makes something more negative. So it becomes negatively charged

Answer: They lose them :)

Explanation:

Answer:

Mass = 12.27 g

Explanation:

Given data:

Mass of NaCl are required = ?

Volume of AgNO₃ = 346 mL (346 mL× 1L/ 1000 mL = 0.346 L)

Molarity of AgNO₃ = 0.607 M

Solution:

Chemical equation:

NaCl  + AgNO₃     →    NaNO₃ + AgCl

Number of moles of AgNO₃:

Molarity = number of moles / volume in L

0.607 M = number of moles / 0.346 L

number of moles =  0.607 M × 0.346 L

number of moles =  0.21 mol

now we will compare the moles of NaCl and AgNO₃.

                       AgNO₃         :          NaCl        

                           1                :            1

                       0.21              :            0.21

Mass of NaCl:

Mass = number of moles × molar mass

Mass = 0.21 mol × 58.44 g/mol

Mass = 12.27 g

Answer:

2060.775 J

Explanation:

From the question given above, we obtained the following data:

Specific heat capacity (C) = 0.129 J/g°C

Mass (m) = 355 g

Initial temperature (Tᵢ) = 95 °C

Final temperature (Tբ) = 140 °C

Heat (Q) tranfered =?

We can calculate the amount of heat transferred by using the following formula:

Q = mC(Tբ – Tᵢ)

Q = 355 × 0.129 (140 – 95)

Q = 45.795 × 45

Q = 2060.775 J

Thus, 2060.775 J of energy was transferred.

Answer:

2060.775 Joules

Explanation:

Answer:

mass

Explanation:

Answer:

mass mass mass mass mass

Answer:

Light

Explanation:

Light is a good example of invisible particles. We cannot see light particles aka photon. We only know the light is present by the objects we see. Because we can only see objects when light reflects from them on our eyes.

[I could only think of one example if I can remember one more I'll edit it down]

Answer:

Because as we move down the group size/ radius of atom increases due to increase in shells and screening effect. The hold of nucleus on valence electrons decreases and effective nuclear charge decreases so it is easy to remove electron from greater sized atoms as compared to smaller sized aroms.

Energy required to remove electron is ionization energy so greater sized atoms have low ionization energy.

Explanation:

Mass of Aluminium: 27 [tex]\frac{gm}{mol}[/tex]

Mass of Ferous Oxide: 71.84 [tex]\frac{gm}{mol}[/tex]

Aluminium: 7.5 Moles Given

How many moles of Iron (II) oxide(FeO)?

As there are 2 moles of aluminium involved and 3 moles of ferrous oxide So,

2 moles Al and 3 moles FeO

7.5 moles Al and x moles FeO

For X moles:

X = [tex]\frac{3\ x\ 7.5 }{2}[/tex]

X= [tex]\frac{22.5}{2}[/tex]

X= 11.25 [tex]\frac{gm}{mol}[/tex]

Answer:

Your answer should be D