4.1.3 Quiz: Heat
Question 15 of 15
The sum of the kinetic energies and potential energies of all of the molecules
in a substance is called the energy of the substance.
Answer here,
SUBMIT

Answers

Answer 1

Answer:

Internal

Explanation:

Internal energy is the sum of kinetic and potential energies of all the molecules in a system.


Related Questions

1. If 80.0 ml of 3.00 M HCl is used to make a 100. ml of dilute acid, what is the molarity
of new dilute HCl solution?

Answers

We are given:

M1 = 3 Molar        V1 = 80 mL

M2 = x Molar        V2 = 100 mL

Finding the molarity:

We know that:

M₁V₁ = M₂V₂

where V can be in any units

(3)(80) = (x)(100)

x = 240/100                                          [dividing both sides by 100]

x = 2.4 Molar

This unbalanced equation represents a chemical reaction:
Pb(NO3)2 + Nal NaNO3 + PbI2
What is the coefficient for Nal once the equation is balanced?
Α. 1
B. 2
C. 3
D. 4

Answers

Answer:

2

Explanation:

Pb(NO3)2 + 2NaI 2NaNO3 + PbI2

To see the coefficients of NaI in the given reaction we need to balance the reaction first. The coefficient for Nal once the equation is balanced is 2. the correct option is option B.

What is balanced equation?

Balanced equation is the one where the number of atoms of each species is same on reactant and product side. In balanced equation mass can neither be created nor be destroyed.

The unbalanced equation is

[tex]\rm Pb(NO_{3})_{2}+ Nal\rightarrow NaNO_{3} + PbI_{2}[/tex]

The atoms of Pb on reactant and product side is 1 so Pb is balanced.

The atoms of N is 2 on reactant and 1 on product side so balance it as

[tex]\rm Pb(NO_{3})_{2}+ Nal\rightarrow 2 NaNO_{3} + PbI_{2}[/tex]

The atoms of O is 6 on reactant and 6 on product side so it is balanced

The atoms of I is 1 on reactant and 2 on product side so balance it as

[tex]\rm Pb(NO_{3})_{2}+2 Nal\rightarrow 2NaNO_{3} + PbI_{2}[/tex]

The atoms of Na on reactant and product side is 2 so Na is balanced.

Now all the elements are balanced

Therefore, the coefficient for Nal once the equation is balanced is 2. the correct option is option B.

Learn more about the balanced equations, here:

https://brainly.com/question/7181548

#SPJ2

- How much power does it take to lift a
1,000 N load 10 m in 20 s?

Answers

Answer:

"500 Joule/sec" is the right answer.

Explanation:

The given values are:

Force,

F = 1000 N

Velocity,

s = 10 m

Time,

t = 20 s

Now,

The power will be:

=  [tex]\frac{Force\times Velocity}{Time}[/tex]

On putting the values, we get

=  [tex]\frac{1000\times 10}{20}[/tex]

=  [tex]\frac{10000}{20}[/tex]

=  [tex]500 \ Joule/sec[/tex]

¿Cómo se llama el grupo IIA de la tabla periódica?

Answers

Answer:

los metales alcalinotérreos: berilio (Be), magnesio (Mg), calcio (Ca), estroncio (Sr), bario (Ba) y radio (Ra).

o simplemente llamado grupo 2A

Explanation:

1. True or False: Fungi are reproduced through the spread of spores.
O True
O False

Answers

Answer:

True

Explanation:

Fungi reproduce by spawning absurd amount of spores greatly increasing the survival rate of the fungi.

Answer:

true

Explanation:

Find the hydroxide concentration of a LiOH soultion that has a pOH of 8.65.

[OH] = _____ (round to 2 decimal places)

Answers

Answer: i need help

Explanation:

A student wants to determine if a
sample of tap water contains Mg+2.
Which of the following pieces of
information are not needed to do a
titration ?

Answers

Answer:

The Density of Magnesium.

Explanation:

WILL GIVE BRAINLIEST!
__ gain electrons in the formation of ionic bonds because they have such high ionization energies indicating a strong attraction between the electrons and the nucleus.

A- metals
B- nonmetals

Answers

Answer:

A-Metals

Explanation:

because they have valence electrons

In steps 3 and 4 of the citric acid cycle, successive oxidations produce ________ as a waste product and the four-carbon carrier ________. In steps 3 and 4 of the citric acid cycle, successive oxidations produce ________ as a waste product and the four-carbon carrier ________. CO2; malate CO2; succinyl-SCoA ADP; oxaloacetate ADP; succinyl-SCoA CO2; oxaloacetate

Answers

Answer:

CO2; succinyl-SCoA

Explanation:

Citric acid cycle, also called Krebs cycle is the second stage of aerobic cellular respiration, which occurs in the mitochondrion. The kreb's cycle is made up of 7 distinct steps, with each involving series of enzymatic reactions.

According to this question, step 3 and 4 of the citric acid cycle involves an oxidation and decarboxylation reaction to produce 2 molecules of carbon dioxide (CO2) and a 4-carbon compound called succinyl group. A coenzyme A binds to the succinyl group to form succinyl-SCoA.

A solvent has a freezing point of 10°C. What is the most likely freezing point if 5 grams of Salt is mixed with the solvent? (AKS 5e)

Question 5 options:

15°C


20°C


5°C


10°C

Answers

[tex]\huge{\color{hotpink}{Hola}}[/tex]

I think it’s 15, not sure though

Potassium hydroxide is partially soluble as shown by the
following reaction:
KOH(s) K+ (aq) + OH(aq)
What is the poH of a 3.32 x 10-5 M KOH solution?
pOH =
Your answer should be rounded to three significant figures. Do not Include
units in your answer.

Answers

Answer: 4.48 or 4.47

How would you find the density of a can of soda pop?

A. Find the mass of the can of soda pop and then multiply by the number of cubic centimeters in the can
B. Find the mass of the can of soda pop and then divide by the number of cubic centimeters in the can
C. Convert a gallon into cubic centimeters and then divide by the mass of the can of soda pop
D. Convert a gallon into cubic centimeters and then subtract the mass of the can of soda pop

Answers

Answer:

it's A.

Explanation:

have uh good day ma :)))))))

(10 POINTS!!!!!!!!!!!
What environmental change will take place when harmful substances get into the food and water supply of animals or plants?

A Climate change
B Increased predators
C Lack of food
D Pollution

need asap

Answers

Answer:

A climate change

Explanation:

the surrounding area would be effected in all ways imaginable, such as change in air, soil, water, plants, animals. and if you eat those said animals those harmful things can transfur into you

D. Pollution
Because pollution is when harmful things get into food and water

What will the change in temperature be when 90 J are applied to 15 g of gold. (Cgold = 0.126 J/gºC)
Round your answer to the nearest whole number.
°C
E
3
4
5
Next
O
I 17

Answers

Answer:

48 °C

Explanation:

q = 90J

m = 15 g

C = 0.126 J/gºC

q = mct

90 = (15)(0.126)t

t = 47.62 °C = 48 °C

Answer:

Explanation:

Formula

E = m * c * Δt

Δt is what you seek.

Givens

E = 90 joules

m = 15 grams

c   = 0.126

Solution

90 = 15 * 0.126 * Δt         Divide by 15

90/15 = 15/15 * 0.126 * Δt

6 = 0.126 * Δt                  Divide by 0.126

6/0.126 = Δt

47.619 = Δt

Δt = 48 oC

Which pair of elements will form an ionic bond?
a. Potassium and Oxygen
b. Iron and Barium
C. Sulfur and Nitrogen
d. Calcium and Silicon

Answers

I believe that the answer is A.

The combination of potassium (K) and oxygen (O2) produces K2O (potassium oxide). The balanced equation is 2K + O2 ==> K2O.

Use the given Nernst equation and reaction to solve this problem. What is the potential of this cell with the given conditions?

2Li (aq) + F2(g) 2Li+(aq) + 2F- (aq)

E° = +5.92 volts

T = 200°C

[Li+] = 10.0 molar

[F-] = 10.0 molar

Answers

Answer:

The 2nd one is the one

Explanation:

and it isn't writen out all the way

An 18.7 g sample of platinum metal increases in temperature from 21.2C to 23.5C

when 5.7 J of heat are added. What is the specific heat of platinum?

Answers

Answer:

132.53 J/kg.°C

Explanation:

Applying,

Q = cm(t₂-t₁)................ Equation 1

Where Q = amount of heat, c = specific heat capacity of platinum metal, m = mass of platinum metal, t₁ = initial temperature, t₂ = Final temperature.

Make c the subeject of the equation

c = Q/m(t₂-t₁).............. Equation 2

From the question,

Given: Q = 5.7 J. m = 18.7 g = 0.0187 kg, t₁ = 21.2°C, t₂ = 23.5°C

Substitute these values into equation 2

c = 5.7/[0.0187×(23.5-21.2)]

c = 5.7/0.04301

c = 132.53 J/kg.°C

moles of H2O are needed to exactly react with 2.0 moles of Ca

Answers

Answer:

4

Explanation:

so first write the balance equation

Ca+2H2O---->Ca(OH)2 + H2

then use molar ratio of H2O and Ca

which is 2:1 so if there are 2 moles of ca there will be 4 moles as you times it by 2. like this

Ca:H2O

1:2

2:4

Hope this helps u understand:)

(hurry pls)Carl plugs in a lamp that has 0.67 of resistance and 8.1 volts running through it. What is the amount of current running through the lamp? C 543 A C 0.08 A C 12.09 A C743 A​

Answers

Answer:

C)12.09 Ampere

Explanation:

V= IR

Where I= current of the system

R= resistance= 0.67 ohm

V= potential difference=8.1 volts

Substitute the values

8.1= I× 0.67

I= 8.1/0.67

=12.09 Ampere

can anyone tell me the answer​

Answers

Answer:

A. A as concentration decreases.

Explanation:

A represents a reactant and B is a product, the concentration of the latter increases at the expense of the concentration of the former. Hence, A is the reactant of the chemical reaction as its concentration decreases.

Hi can someone who know the answers tell me what it is and pls don't send me a link also don't send me the wrong answers if you don't know it's ok :)

Answers

Answer:

you diba ikaw ang nagpamalimali diba no

What were some of the causes of the Amu Darya and Syr Darya rivers being ruined?

urban sewer drainage
tannery dumping
tourism
drying up
agricultural chemicals

Answers

Answer:

drying up

agricultural chemicals

Explanation:

NO LINKS OR FILES

Using Ohm's Law and Watt's Law. write the formula to find each measurement

Wattage (Watts)

Resistance (Ohms)

Voltage (Volts)
and/or

Current (Amps)
and/or

Answers

Explanation:

Mathematically, Ohm's law is given by :

V = IR

Where

V is voltage

I is current

R is resistance

The electric power of an electrical appliance is given by:

P = VI

Wattage = VI

Resistance, [tex]R=\dfrac{V}{I}[/tex]

Current, [tex]I=\dfrac{V}{R}[/tex]

Hence, this is the required solution.

List and describe the four layers of the Earth.

Answers

Answer:

Crust- thinest layer; the part we live on

Mantle- just beneath the crust; consists of magma

Outer Core- liquid metal; super hot; thickest layer (i think)

Inner Core- solid metal; SUPER compressed; hottest layer

Four satellites are in orbit around the Earth. The heights of their four orbits
are identical. The masses of the four satellites are given in the table. For
which satellite is the gravitational pull of Earth the strongest?

Answers

B i’m pretty sure, because the heavier the better it works

What is the number of moles in 10.62 L of H2S gas at STP?

Answers

Answer:

0.474 moles

Explanation:

divide 10.62 by 22.4.

17 moles of oxygen is equals to how many grams

Answers

17 × ( 2 × 16 ) = 17 × 32 = 544 grams

___________________________

How many energy levels does an atom of carbon have?

Answers

Answer:

6

Explanation:

it has 6

{------------•--------------}

What is the oxidation state of Carbon in CaC2O4?

Answers

Answer:

The oxidation state of carbon in CaC204 is 3

The first one is correct.

A 25.0mL solution of KOH is neutralized with 30.3 mL of 0.100M HBr. What is the concentration of the original KOH solution?

Answers

Answer:

The concentration of the original KOH solution is 0.1212 M.

Explanation:

Dilution is the process to reduce the concentration of solute in solution. This is accomplished by adding more solvent to the same amount of solute. In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding solvent to an existing solution.

As only solvent is being added, the consequence is that by not increasing the amount of solute, but if the amount of solvent, the concentration of the solute decreases.

The expression for the dilution calculation is:

Ci* Vi = Cf* Vf

where:

Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volume

In this case:

Ci= ? Vi: 25 mL Cf: 0.1 M Vf: 30.3 mL

Replacing:

Ci* 25 mL= 0.1 M* 30.3 mL

Solving:

[tex]Ci=\frac{0.1 M*30.3 mL}{25 mL}[/tex]

Ci=0.1212 M

The concentration of the original KOH solution is 0.1212 M.

Other Questions
Definition: He was a leading American progressive and isolationist politician from California, and wasalso Theodore Roosevelt's running mate in 1912. Which statement is true about the early settlers in the americas I HAD TO PUT IN MATH BUT ITS PEList and describe the technique for the free throw in basketball. When does it take place in the game? REWARDING BRAINLIEST what is purgatory? how is this title appropriate to the play? Which of the following is the correct graph of the solution to the inequality -18 > -5x + 2 -48? The price of a mat is x USD from the start. Write an algebraic expression for the price in the following situations:a) After it's been reduced by 50%b) After it's been reduced by 50% twicec) After first being reduced by 60% and then 40% In calorimetry, energy is measured through heat transfer from one substance toanother. Which of the following is NOT a method of heat transfer? i need help write expression in exponential from Graph the image of AEFG after a dilation with a scale factor of centered at the origin.1018G62-10+8-64-2.0246810-2EF-4-6-8-100 Directions: Use the information given to write the equation of the circle in standard form. 16. center:(-10,-4), point on circle: (4, -2) 17. center: (-9, -3), point on circle: (-11, 2) 18. center: (5.-7), point on circle: (-3,-1) 19. center: (8,2), point on circle: (14,-1) WO A pound of chocolate costs 8 dollars. Kala buys p pounds. Write an equation to represent the total cost c that Kala pays. The diameter of a cylinder is 1 yd. The height is 8 yd. What is the first step to finding the volume of the cylinder? Find the volume of the cylinder.What is the first step to finding the volume of the cylinder?A.Find the product of the diameter and the height.B.Use the diameter to find the area of the cylinder.C.Find the sum of the diameter and the height.D.Use the diameter to find the radius of the cylinder. Please help me on this I don't know which one they are 15-2X = -45 how do I show My work for this? Triangle PQR is shown. Use the ruler provided to measure the dimensionsof the triangle to the nearest ? inch.10Inches0InchesWhich measurement is closest to the area of triangle PQR in squareinches?PLS HELLPP Find the measure of the label angles below note: you must find y first131246.868.2 Who won the election of 1860? How did it impact the southern states? The results of a survey of 38 students and the foreign language they are studying are shown in the two-way frequency table. Language Gender Chinese French Spanish Total Girl 4 7 10 21 Boy 1 1 15 17 Total 5 8 25 38 What fraction of the surveyed students are taking Chinese? of the surveyed students are taking Chinese. What factors and events influenced the outcome of the Civil War PLEASE HELP DUE TODAYEvaluate3^ square root5 square root5divided by 3^ square root 5 5^