Which of the following phase changes describes what is
happening in the following endothermic process?
H20 (1) + heat --> H2O (g)
O melting
o freezing
o boiling
O condensing

Answers

Answer 1

Answer:

I think the answer is boiling


Related Questions

PLEASE HELP MEEEEEEEEEEEEE

Answers

Answer:

Explanation:

THE BEST ANSWER IS CCC

What is indicated by the methyl-prefix?

Answers

Answer:

The molecule is a branched hydrocarbon.

Explanation:

The methyl prefix indicate the presence of a single carbon or the molecule is a branched hydrocarbon.

Prefix in IUPAC Nomenclature

The Prefix is used to show or indicate the substituents, side chains of the molecule and prefix attached to the beginning of a word and the molecules name is based on the number of carbon atoms in IUPAC nomenclature.  The International Union of Pure and Applied Chemistry (IUPAC).

For Example:

Number of carbon Atoms          Root Name                  Prefix (side group)

1                                                    meth-                             methyl-

2                                                   eth-                                ethyl-

3                                                   prop-                              propyl-

4                                                   but-                                 butyl-

5                                                   pent-                               pentyl-

6                                                   hex-                                 hexyl-

7                                                   hept-                                heptyl-

Thus, we can say that prefix tells us the number of carbon atoms in each molecule. A presence of single carbon is indicated by the methyl prefix or we can also say that the molecule is branched hydrocarbon.

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Balance this chemical equation

C4H8 + O2 --> CO2 + H2O​

Answers

Answer:

you're going to start by balancing the carbon first. To do this, you want to times the carbon on the right by 4 so we put a 4 in front of the CO2.C4H8 + O2 --> 4CO2 + H2OWe're now going to try and balance the hydrogen by putting a 4 in front of the H2O.C4H8 + O2 --> 4CO2 +4H2OThen we're going to count the oxygens on both side and balance them by putting a 6 in front of the O2.C4H8 + 6O2 --> 4CO2 + 4H2O

Answer:

hope this helps :) please correct me if I'm wrong.

C4H8 + 6O2 --> 4CO2 + 4H2O.

Explanation:

C4H8 + O2 --> CO2 + H2O

C=4 C=1

H=8 H=1

O=2 ---> O=3

C4H8 + 6O2 --> 4CO2 + 4H2O

C=4 C=4

H=8 H=8

O=12 ---> O=12

How can I solve this?

Answers

Explanation:

option d

hope helps u

have a nice day

How many significant figures are in the measurement 1.3000 meters

Answers

Answer:

5

Explanation:

mark me brainliest!

How many moles are found in a 350.mL solution of 13.5M HNO3

Answers

Answer: Moles are found in a 350.mL solution of 13.5M [tex]HNO_{3}[/tex] are 4.725 mol.

Explanation:

Given: Volume = 350 mL (1 mL = 0.001 L) = 0.350 L

Molarity = 13.5 M

Molarity is the number of moles of a substance present in a liter of solution.

Therefore, moles of [tex]HNO_{3}[/tex] present in the given solution are calculated as follows.

[tex]Molarity = \frac{moles}{Volume (in L)}\\13.5 M = \frac{moles}{0.350 L}\\moles = 4.725 mol[/tex]

Thus, we can conclude that moles found in a 350.mL solution of 13.5M [tex]HNO_{3}[/tex] are 4.725 mol.

Why is it important for scientists to use the scientific method?

Answers

Answer:

The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. Even the best-intentioned scientists can't escape bias. ... That's the job of the scientific method. It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results.

Answer:

to get used to them

Explanation:

you have to practice them so that they can get into your head

Formulas for the compounds below.
Sulfur Trioxide
Sodium hydroxide

Answers

Sulphur Trioxide = So3

Sodium Hydroxide = NaoH

Answer:

[tex]\huge\boxed{Sulfur \ Trioxide\hookleftarrow}[/tex]

SO3

[tex]\huge\boxed{Sodium \ Hydroxide\hookleftarrow}[/tex]

NaOH

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# ꧁❣ RainbowSalt2²2² ࿐

When crossing parents with genotypes Rr and rr what will be the percentage of the genotypes of the offspring

Answers

Answer:

Explanation:

Heterozygous cross with a hom.ozygous recessive yields the following results

50% rr (hom.ogyzous recessive)

50% Rr (heterozygous dominant)

A heterozygous cross with a homozygous recessive gives the following results: 50% rr (homozygous recessive) and 50% Rr (heterozygous dominant).

What is Parental crossing?

Crossing over is a type of cellular process which occurs during the process of meiosis when chromosomes of the same type line up. When these two chromosomes – one from the mother and one from the father – line up, parts of the chromosome can be switched. Two chromosomes contain the same genes, but the genes may have different forms.

The organisms in this initial hybridization are called the parental or P generation. The progeny of the Rr x rr cross are called F1 generation which will have a heterozygous cross with the homozygous recessive giving the following results: 50% Rr (homozygous recessive) and 50% rr (heterozygous dominant)

A cross between two of the offspring in F1 generation would produce a new set of progeny called second filial generation (or F2 generation).

Thus, a heterozygous cross with a homozygous recessive gives the following results: 50% rr (homozygous recessive) and 50% Rr (heterozygous dominant).

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Indicate what reaction is happening at the anode, and for the reaction below, which species would be the anode? Sn(s) + 2 Ag⁺(aq) → Sn2+(aq) + 2 Ag(s)

Answers

Answer:

Sn --> Sn2+ + 2e-

Explanation:

At anode oxidation reaction occur. In this reaction Sn is getting oxidized to state +2 while Ag is reduced from +1 to 0.

Hence, reaction at anode will be  

Sn (s) --> Sn2+ (aq) + 2e-

At cathode the following reaction occur

2 Ag⁺ + 2e- ---> 2Ag (s)

Please please help meeee! I will give brainliest

Answers

Answer:

The carbons on either side of the double bond are pointed in the same direction

Five hundred feet is the same as how many meters?

Answers

In 500 ft there are 152.4 m

So rounded would be 152 m

If helped mark me the brainiest!!

How many grams of LiF are needed to make 87 g LiF solution into a
34.5% solution?
solution?
answer options:
30 g LIF
0.01 g LIF
45.8 g LIF
0.02 g LIF

Answers

Answer: 30 g LiF

Explanation:

Whatt happens to water when its heated from 0 °C to 4 °C?

Answers

Answer:

molecules gain energ and start to move quickly

Water has highest density at 4∘C. This changes its properties from other simple fluids. When water is heated from 0∘C to 4∘C, the volume of liquid decreases. Thus for this transition, P ΔV is negative.

What reacts with the hydrocarbon fuel in a combustion reaction? small words, please

Answers

Hydrocarbon combustion refers to the chemical reaction where a hydrocarbon reacts with oxygen to create carbon dioxide, water, and heat.

#small words#

What do you think are the products of cellular respiration? *

Answers

Answer:

Cellular respiration uses oxygen in addition to glucose. It releases carbon dioxide and water as waste products. Cellular respiration actually "burns" glucose for energy.

Explanation:

why do some chemical reactions will not generate products?

Answers

Answer:

Some chemical reactions will not generate products is because the molecules in a chemical reaction aren´t able to line up with each other correctly.

Explanation:

Answer:

The reason that a chemical reaction doesn't happen is that the molecules weren't able to line up with each other correctly. It's the same as you extending your right hand and your friend extending his right hand at the same time.

Explanation:

What does a nucleus look like

Answers

Answer:    

Explanation:      

The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

ATOMS: MULTIPLE CHOICE

Answers

Answer:

Double bonds. It says I have to write more words lol but yeah it's double bonds

Which products are the same in both the copper carbonate and the calcium carbonate reactions shown above

Answers

Answer:

The common product is H2CO3

Explanation:

Complete question

Which products are the same in both the copper carbonate and the calcium carbonate if they react with hydrochloric acid in different reactions?

Solution

Reaction of  copper carbonate and hydrochloric acid  is as follows

CuCO3 + 2 HCl --> CuCl2 + H2CO3

Reaction of  calcium carbonate and hydrochloric acid  is as follows

CaCO3 + 2HCl --> CaCl2 + H2CO3

The common product is H2CO3

What is the iupac name of CH3-O-CH2-CH2-CH3?

Answers

Answer:

The iupac name of CH3-O-CH2-CH2-CH3 is Methoxybutane.

During chemical reactions, in general, the rate of reactions decreases when temperature increases:
1) yes
2) no

Answers

Answer:

b the same like this page provide the best way to go with it the hell are nutrients to

Explanation:

bush administration of jute bags and purses and then a good day to day basis and then we will have the same IP Android app and wanted to let you know that I am a

Most of the electricity that is used in everyday life comes from________ current.
Fill in the blank

Answers

Answer:

electric is your answer :)

Explanation:

Edge STEM instruction/assignment perhaps???

Answer:

A. C (alternate current)

Pick the MAIN output form of energy.



A snail eating a carrot so the snail has energy to move.
Electrical Kinetic Energy


Motion Kinetic Energy


Chemical Potential Energy


Thermal Kinetic Energy


Motion Potential Energy


Nuclear Potential Energy

Answers

Answer:

Chemical Potential Ener

(PLEASE HELP)
Analyzing the pros and cons of a decision can help you make a difficult choice. Which of the following is a pro associated with the use of hydropower as an energy source?
A. A large amount of energy can be released by a small amount of fuel.
B. The use of hydropower produces environmentally friendly waste products.
C. Hydropower is a renewable energy source.
D. The chemical reactions involved remove harmful substances from the air.

Answers

Answer: I think it is c

Two water molecules are weakly attracted to each other when a slightly positive hydrogen atom in the first molecule is attracted to the slightly negative oxygen atom on the second molecule. What type of bond is this

Answers

The answer is: Hydrogen bond

When copper (II) chloride reacts with sodium nitrate, NaNO3, copper (II) nitrate, Cu(NO3)2, and sodium chloride are formed. Write a balanced chemical equation for this reaction. Then determine how much sodium chloride can be formed when 15.0 grams of copper (II) chloride react with 20.0 grams of sodium nitrate.

Answers

Answer:

CuCl2 + 2NaNO3 → Cu(NO3)2 + 2NaCl

Explanation:

m(NaCl) =m(CuCI2) × 2Mr(NaCl) / Mr(CuCI2)

= 15 × 2 × (94/135)

=20.89 g

One of your classmates asks you why an ice cube melts in water. Which of the following
would be your best explanation?

a.) The ice cube transfers energy to the air.

b.) The ice cube transfers energy to the water.

c.) Energy is transferred from the ice to the water and from the water to the ice.

d.) The water transfers energy to the ice cube.

Answers

Answer:

the answer is B

Explanation:

the ice puts 8ts cold into the water taking it away from the ice

What happens to a catalyst in a reaction?



Question 1 options:

a)

It is incorporated into the products.


b)

It remains unused.


c)

It is incorporated into the reactants.


d)

It evaporates.

Answers

Answer:

it's eveporates remains unused products

[tex]\huge{ \mathcal{  \underline{ Answer }\:  \:  ✓ }}[/tex]

Catalyst are substance that are added to a reaction in order to speed of the reaction.

And they remain the same before and after the reaction, hence the correct option is :

B. It remains unused.

__________________________

[tex]\mathrm{ ☠ \: TeeNForeveR \: ☠}[/tex]

La presión de vapor del agua pura a 25 oC es 24,56 mmHg y la de agua de mar es 23,99 mmHg, y si suponemos que el agua de mar sólo contiene cloruro de sodio, calcula su concentración molal.

Answers

Answer:

1.32m es la concentración de NaCl en el agua de mar

Explanation:

La disminución de presión de vapor sigue la ecuación:

P = XP⁰

Donde P es la presión de la solución = 23.99mmHg

X es la fracción molar del solvente

P⁰ la presión del agua pura = 24.56mmhg

23.99mmHg = X*24.56mmhg

0.97679 = X

La fracción molar del solvente se define como:

Moles Solvente / (Moles soluto + Moles solvente)

Asumiendo que las moles de soluto = NaCl = 1:

0.97679 = Moles solvente / (1 + Moles solvente)

0.97679 + 0.97679 Moles solvente = Moles solvente

0.97679 = 0.02321 moles solvente

42 moles solvente = 42 moles de agua.

masa de agua:

42 moles * (18.01g / mol) =758g de agua = 0.758kg

Molalidad, m, son las moles de soluto (1mol NaCl) por kg de solvente (0.758kg):

1mol / 0.758kg =

1.32m es la concentración de NaCl en el agua de mar

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Select the correct text in the passage.Which detail in the excerpt best supports the idea that the setting is in a very busy place?from Rogue Heart by Axie OhThe dreamers gather in Neo Beijings starlight district. The wanderers and the thrill-seekers.Those with poems in their souls and secrets in their hearts. All those racing toward the bright, unknowable future. All those running from pasts painful and unforgiven. If you listen carefully, you can hear the song of the city. Its in the sharp, raucous laughter of the kids barreling down the crowded streets, in the heavy electronic beats erupting like great beasts from basement clubs, in the wind whistling through dark alleys, and in the rain as it drops on to the city like so many falling stars. Two years ago, I stumbled into the city, half starved and afraid, and I couldnt hear the song. My heart beat louder than the music.The wanderers and the thrill-seekersthe kids barreling down the crowded streetserupting like great beasts from basement clubsin the rain as it drops on to the city like so many falling stars.EDMENTUM 14. On January 1, Nick Co. purchased a delivery truck for $60,000. The truck's salvage value is $2,000, and its estimated useful life is 10 years. The productive life of the truck is estimated to be 100,000 miles. During the first year, the truck was driven 19,000 miles. Nick uses the double-declining balance method of depreciation. What amount of depreciation expense should Nick record for the first year Geometry//// volume of a cylinder Hi plz help, if you can ill mark you 5 starz! :) you want to go Post malone concert ASAP:The estimated atomic mass of silicon could be Choose... amu because the Choose.. abundant isotope is Choose... Beth is flying a kite with 300 feet of string. The kite gets stuck in a tree, so she ties the other end of the string to a rock on the ground making the string taut. The angle of elevation from the rock to kite is 35 degrees. How far up the tree is the kite? Round your answer to the nearest tenth. (No links please) what is potential energy?? How to keep my family safe during a hurricane? How does Frederick Douglass view American Democracy in 1852? The position of a particle at time tt is s(t)=t3+3t.s(t)=t3+3t. Compute the average velocity over the time interval [2,5][2,5] and estimate the instantaneous velocity at t=2.t=2. (Give your answers as whole numbers.) Find the volume of the cone. Round your answer to the nearest hundredth. Find area of the shaded region. Thanks Which statement best describes the central idea of the text? Question 35 options: Women protested and made speeches in order to gain the right to vote. Women were prevented from joining many movements for social and political change throughout history Women first began protesting unfair treatment in the 1900s because people were finally willing to listen to them. Women have made important contributions to many movements for social and political change throughout history Which of the following best describes the result of DNA replication?A. Each chromosome has tripled in size and weight.B. Each chromosome has four sister chromatids and four centrioles.C. Each chromosome has double its initial amount of genetic material.D. Each chromosome has outgrown its cells nucleus and begins to expand. Omar, Amare, and Jack paid a total of $68.25 for dinner and tickets to a concert. The concerttickets cost $9.75 each. If the 3 friends split the dinner bill equally, how much did each friendspend on dinner? George Washington supported a policy of ______when he told Americans to avoid getting involved in foreign affairs' A)annexationB)diplomacyC)isolationism D)democracy In his "Address to Students at Moscow State University," President Reagan expresses the idea that a new era is being ushered in by the power of human imagination.Which two universal ideas will most likely represent the message that resonates with the students of Moscow State University?beauty of simplicitythe role of technology in societythe disadvantages of materialismindividual versus societychange versus tradition Which of the following is a common role adjustment for a couple during the empty nest stage? * The expression 4x* represents 144