One glass of water is 85 degrees F and another is 40 degrees F. When an Alka Seltzer tablet is dropped into each glass, at the same time, which of the following describes the expected results? The 85 degree F glass will have an accelerated chemical reaction, because the water was warmer.

The 85 degree F glass will have an accelerated chemical reaction, because the water is cooler.

The 40 degree F glass will have an accelerated chemical reaction, because the water is cooler.

The 40 degree F glass will have an accelerated chemical reaction, because the water was warmer.

Answer:

convection current

Explanation:

Answer:

V₂ = 37.71 mL

Explanation:

Given data:

Initial volume = 85.0 mL

Initial pressure = 1 atm

Initial temperature = 20°C (20 +273 = 293 K)

Final temperature = 91°C (91+273 = 364 K)

Final volume = ?

Final pressure = 2.8 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 1 atm× 85.0 mL × 364 K / 293 K × 2.8 atm

V₂ = 30940 atm.mL.K / 820.4 K.atm

V₂ = 37.71 mL

I think it is A,C,D hope this helps:)

God Bless

Answer:

It means there are 2 carbon atoms or 2 molecules of Co(I cant tell by spacing but the 1st one is more likely)

Explanation:

Answer:

FeBr2

it is what it is indeed

Answer:

Adenine always pairs with thymine in a DNAmolecule.

Explanation:

Answer: The likelihood of the offspring having freckles and not having freckles is the same.

Explanation:

Freckles are tiny brown spots on your skin, often in areas that get sun exposure. freckles are harmless. They shape as a consequence of melanin overproduction, which is responsible for skin and hair color (pigmentation). Overall, freckles derive from ultraviolet (UV) light stimulation.

Answer:

The likelihood of the offspring having freckles and not having freckles is the same.

Explanation:

just did it

Answer:

The parasympathetic nervous system is responsible for calming the body and conserving energy.

Explanation:

As the body conserves energy, pupils contract, heartbeat slows, blood pressure decreases, and digestion is stimulated.

It functions to restore homeostasis and is active when the body is at rest and recuperating.

The hydrosphere include glaciers, groundwater, and polar ice. That is option A, B and C.

Hydrosphere is defined as the part of the earth that is made up of water which includes the surface of the planet, underground, and in the air.

The water found in the hydrosphere of earth moves in cycles in such a way that non is lost.

The components of the hydrosphere include the following:

The polar ice is part of the hydrosphere because it is the frozen part of the earth's hydrosphere.

The lava is not part of the hydrosphere but part of lithosphere and it's released when volcanic eruptions occurs.

Therefore is can be concluded that glaciers, groundwater, and polar ice are parts of the hydrosphere while the lava is not part of the hydrosphere.

Learn more about hydrosphere here:

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Answer:

3.57e+32

Explanation:

3.57e+32

Answer:

The volume of two moles of oxygen at STP is

Assuming that the gas is at standard temperature and pressure (STP), one mole of any gas occupies 22.4 L . This means the number of moles of O2 is 222.4=0.089 mol .

Explanation:

Answer:

Eght: 0

Explanation:

The work formula is W = F*d where d is displacement (which means the direction matters)

Same amount of work.

Eight

Time does not matter in Work. Force and Distance do.

F = 50 N

s = 0  The only work you have done is move the ball above your head. Thereafter you just held it.

t = 15 but no work is done. Tell your tired muscles that as they try and deal with holding a 5 kg mass above you head.

W = 0

Nine

Again from the last question you should be able to tell that time does not matter. The force is the same for both of you (that's why he's your identical twin).

So the work is the same. You both weigh the same. You both went the same distance.

8

Answer:

V₂ = 946.72 mL

Explanation:

Given data;

Initial pressure = 0.926 atm

Initial volume = 457 mL

Temperature = constant = 29.5°C

Final pressure = 0.447 atm

Final volume = ?

Solution:

The given problem will be solved through the Boyle's law,

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

by putting values,

P₁V₁ = P₂V₂

0.926 atm × 457 mL = 0.447 atm × V₂

V₂ = 423.18 atm. mL/ 0.447 atm

V₂ = 946.72 mL

Answer: Hope This Helps

Explanation:

The boiling point of a solution : 100.1536 °C

Given

0.150 mole Al(NO₃)₃ in 0.500 kg water. kb= 0.512​

Required

The boiling point

Solution

Colligative properties

ΔTb = Kb . m

m = molality = mol solute per kg solvent

m = 0.15 moles : 0.5 kg

m = 0.3

ΔTb = 0.512 x 0.3

ΔTb = 0.1536

ΔTb = Tb solution - Tb solvent (solvent=water, boiling point = 100 °C)

0.1536 = Tb solution - 100

Tb solution = 100.1536 °C

Answer:

B. CaCl₂ + H₂CO₃  → CaCO₃ + 2HC

Explanation:

A balanced reaction has the same number of atoms in the both sides of the reaction. In the options:

A. CaCl₂ + H₂CO₃ → 2CaCO₃ + HCI

In this reaction there is 1 Ca in reactants and 2 in products -The reaction is unbalanced-

There is 1 Ca is both sides, 2Cl, 2H, 1C and 3 Oxygens -The reaction is balanced

C. CaCl₂ + 2H₂CO₃ → CaCO₃ + HCI

There is 1 Ca in both sides but 2Cl in reactants and 1 in Cl -The reaction is unbalanced-

D. 2CaCl₂ + H₂CO₃ →CaCO₃ + HCI

There are 2 Ca in reactants and 1 in Ca -The reaction is unbalanced-

Answer:

yes they are broken down into smaller units

Answer:

D Ribosomes

Explanation:

Answer:

D. Ribosomes

Answer:

20

Explanation:

The atomic number of this element is 20.

Atomic number is the number of protons within an atom.

Since we have been given that the number of protons is 20. Therefore, the atomic number is 20.

Mass number of the atom is the number of protons plus the number of neutrons.

For this atom, mass number = 20 + 20  = 40

Atomic number is 20

Answer:

a. As

Explanation:

Answer:

B.

Electromagnetic waves do not require any type of media.

The correct statement is " Electromagnetic waves can transfer energy through".

Electromagnetic waves are synchronized vibrations of electric along with magnetic fields that travel across a vacuum at the speed of light. The oscillations of the two fields generate a transverse wave since they are perpendicular to each other and to the direction of energy as well as wave propagation.

The capacity to work is defined as energy. It can take the form of potential energy, kinetic energy, thermal energy, electrical energy, chemical energy, nuclear energy, or any other form.

Therefore, the statement "Electromagnetic waves can transfer energy through" will best describe electromagnetic waves.

Hence, the correct answer will be option (b).

To know more about energy and electromagnetic waves.

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Answer:6 atoms

Explanation:Each NaOH has one Na and one O and one H. Therefore, 2 NaOH has 6 atoms.

Answer:

Three atoms

Explanation:

Hope this helps

pOH of a solution = 5.95

Given

The concentration of hydronium ions : 8.9 x 10⁻⁹

Required

pOH

Solution

pOH = - log[OH]​

[H₃O⁺]= 8.9 x 10⁻⁹

pH = - log[H₃O⁺]

pH = 9 - log 8.9

pH = 8.05

pH + pOH = 14

pOH = 14-pH

pOH= 14-8.05

pOH = 5.95

Answer:

Emission of light

color change:)

Explanation:

Answer:

B and C

Explanation:

edge 2021

I just did it

They should be recycled but not reused because the "repeated use increases the risk of leaching and bacterial growth." Also, recycling PET plastic "results in reduced energy consumption, lower cost, and reduced environmental impact."

Answer:

the answer is 55 degrees Celsius

Answer:

Hydrogen and Oxygen

Explanation:

The chemical equation for water is H20, meaning Hydrogen and 2 oxygen!