During which changes of state do atoms that connot move past one another becomes free to move?

a. Vaporization and sublimation
b. boiling and deposition
c. sublimation and melting
d. condensation and melting​

Answer:

20.93 g

Explanation:

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

Heat (Q) = 3.5 KJ

Initial temperature (T₁) = 26°C

Final temperature (T₂) = 66°C

Mass (M) =?

Next, we shall convert 3.5 KJ to J. This can be obtained as follow:

1 KJ = 1000 J

Therefore,

3.5 KJ = 3.5 KJ × 1000 J / 1 KJ

3.5 KJ = 3500 J

Next, we shall determine the change in the temperature of the water. This is illustrated:

Initial temperature (T₁) = 26°C

Final temperature (T₂) = 66°C

Change in temperature (ΔT) =?

ΔT = T₂ – T₁

ΔT = 66 – 26

ΔT = 40 °C

Finally, we shall determine the mass of the water. This can be obtained as follow:

Heat (Q) = 3500 J

Change in temperature (ΔT) = 40 °C

Specific heat capacity (C) = 4.18 J/gºC

Mass (M) =?

Q = MCΔT

3500 = M × 4.18 × 40

3500 = M × 167.2

Divide both side by 167.2

M = 3500 / 167.2

M = 20.93 g

Therefore, the mass of the water is 20.93 g

Answer:

I think it would be A honestly...

Answer:

0.0532 M

Explanation:

Just did the test :)

Answer:

1. C

2. D

Explanation:

Answer:

both

Explanation:

plants have mitochondria and can preform cellular respiration

animals and plants use oxygen in respiration to produce corbon dioxide

Answer:

I think it's both.

Explanation:

I just looked it up, so yeah.

D. 62.8 J

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Thermodynamics

Specific Heat Formula: q = mcΔT

Step 1: Define

[Given] m = 0.750 g

[Given] c = 4.186 J/g °C

[Given] ΔT = 40.0 °C - 20.0 °C = 20.0 °C

[Solve] q

Step 2: Solve

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

62.79 J ≈ 62.8 J

Answer:

a. 5.36x10⁻⁴ g/mL

b. 4.29x10⁻⁵ g/mL

Explanation:

As the units for concentration are not specified, I'll respond using g/mL.

a. We divide the sample mass by the final volume in order to calculate the concentration:

b. We can use C₁V₁=C₂V₂ for this question:

Answer:

20.9grams

Explanation:

Using the formula:

Q = m × c × ∆T

Where;

Q = amount of heat (joules)

m = mass of substance (g)

c = specific heat of water (4.184 J/g°C)

∆T = change in temperature (°C)

According to the provided information;

Q = 3.5kJ = 3.5 × 1000 = 3500J

m = ?

c of water = 4.184 J/g°C

∆T = 66°C - 26°C = 40°C

Using Q = m × c × ∆T

m = Q ÷ (c × ∆T)

m = 3500 ÷ (4.184 × 40)

m = 3500 ÷ 167.36

m = 20.9

mass = 20.9grams

Answer:

the answer of the question is =ch4+2o2

Answer: The coefficient for water after the equation is balanced is 2.

Explanation:

The balanced chemical equation must have same charge and same number of atoms on both sides of the equation.

As the given reaction is a redox recation occuring in acidic medium.

[tex]HNO_3+3Fe^{2+}+3H^+\rightarrow NO+3Fe^{3+}+2H_2O[/tex]

The coefficient for water will be 2 after the equation is balanced.

Answer:

HBr > HCl > H2S > BH3

Explanation:

In many acids, the magnitude of electronegativity of the nonmetal determines the strength of the acid. The less electronegative the non-metal is, the stronger the acidity of the acid.

This is because the less electronegative the nonmetal is, the more easily the H-X bond is broken since it is longer and weaker.

This explains the order of acid strength shown in the answer above.

Answer:

Voltaic cells convert chemical energy to electrical energy by means of an oxidation-reduction reaction. Electrolytic cells convert electrical energy to chemical energy, so they are the opposite of voltaic cells. They require an input of electrical energy to cause an oxidation-reduction reaction.

Explanation:

that good enough for ya my asian friend?

Answer:

This is the answer hopefully you understand this also can you mark me brainliest pls

Answer:

B. Ice crystals melt as they fall through a layer of warm air and then refreeze into a solid form as they fall.

Explanation:

Answer:B

Explanation:

Answer:

140 L (3 sig-figs; includes the zero)*

Explanation:

PV = nRT => V = nRT/P

P = 0.800atm

V = ?

n = 5 moles

R =0.08206 L·atm/mol·K

T = -1°C = (-1 + 273)K = 272K

V = nRT/P = (5mol)(0.08206 L·atm/mol·K)(272K)/(0.800atm) = 139.5 L

*=> 140 Liters (3 sig-figs) => zero is a sig-fig b/c it was result of rounding 139.5 Liters to obtain 140 Liters.

Answer:

'See Explanation

Explanation:

Determine the [OH−] , pH, and pOH of a solution with a [H+] of 9.5×10−13 M at 25 °C.

Given [H⁺] = 9.5 x 10⁻¹³M => [H⁺][OH⁻] = 1.0 x 10⁻¹⁴ => [OH⁻] = 1.0 x 10⁻¹⁴/9.5 x 10⁻¹³ = 0.0105M

pH = -log[H⁺] = -log(9.5 x 10⁻¹³) = - (-1202) = 12.02.

pOH = -log[OH⁻] = -log(0.0105) = -(-1.98) = 1.98

Now you use the same sequence in the remaining problems.

Answer:

A. p(H) = 2.0506

B. p(H) = 7.0969

Explanation:

A.

p(H)= -log[H+]

p(H)= -log(8.9×10^-3)

p(H) = 2.0506

B.

p(H)= -log[H+]

p(H)= -log(8×10^-8)

p(H) = 7.0969

Answer:

Renewable Energy Source. Among all the benefits of solar panels, the most important thing is that solar energy is a truly renewable energy source

Reduces Electricity Bills

Diverse Applications

Explanation:

Answer:

Hydrogen gas (H2) and oxygen gas (O2) react to form liquid hydrogen peroxide (H2O2). The atoms of the reactants have combined to form a new substance. The new substance has its own set of properties that is different from the properties of each reactant.

Explanation:

Answer:

lol i know this isnt the best but Your comic strip can be about how when you put smores in a campfire, the smores become burnt  that is example of energy transfer because energy is traveling as heat to another object.

Explanation:

Answer:

the answer is in the next one I just answered

Answer: The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]

Explanation:

The energy and frequency are related by :

[tex]E=N\times h\times \nu[/tex]

E = energy of photon

N = number of moles = 1

h = planks constant = [tex]6.6\times 10^{-34}Js[/tex]

[tex]\nu[/tex] = frequency = [tex]7.5\times 10^{14}Hz[/tex]

[tex]E=1\times 6.6\times 10^{-34}Js\times 7.5\times 10^{14}s^{-1}=49.5\times 10^{-20}J[/tex]

The energy of a mole of photon associated with this frequency is [tex]49.5\times 10^{-20}J[/tex]

Answer:the opposite charge attracts like magnets

Explanation:

I believe the answer is Ribosome

if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)

Answer:

mechanical energy

hope it helps and your day will be full of happiness

Answer:

The answer is "Greater than zero, and greater than the rate of the reverse reaction".

Explanation:

It applies a rate of reaction to the balance, a forward response dominates until it reaches a constant. This process is balanced before 52 mmol of the reactant[tex]HC H_{3} \ CO_2[/tex], to which 3 is added. In balance, that rate of the forward reaction was its rate with forwarding reaction, both of which are higher than 0 as the response has achieved balance so that both species get a level greater than 0.

Answer:

packed-cell volume

Explanation:

Answer:

hopefully this helps is not i have more just let me know

Explanation: #1 Identify the colligative property.

A) vapor pressure lowering

B) freezing point depression

C) boiling point elevation

D) osmotic pressure

E) all of the above

#2 ________ is applied to roads in wintertime so that the ice will melt at a lower temperature.

A) Antifreeze

B) Water

C) Salt

D) Sugar

E) Oil

#3 Give the reason that antifreeze is added to a car radiator.

A) The freezing point is lowered and the boiling point is elevated.

B) The freezing point is elevated and the boiling point is lowered.

C) The freezing point and the boiling point are elevated.

D) The freezing point and the boiling point are lowered.

E) None of the above.

4# Place the following aqueous solutions of nonvolatile, nonionic compounds in order of decreasing osmotic pressure.

I. 0.011 M sucrose

II. 0.00095 M galactose

III. 0.0060 M glycerin

A) I > III > II

B) I > II > III

C) II > III > I

D) III > I > II

E) II > I > III