Describe what a phase diagram is

Answers

Answer 1

Answer:

The graph which shows under what conditions of temperature and pressure distinct phases of matter occur is called phase diagram.


Related Questions

Determine the correct set-up below to determine what mass, in grams, of N2 is needed to completely react with 105 g F2 ?

Answers

Answer:

C: 1 mol F2/38 g F2

Explanation:

The reaction equation is;

N2 + 3F2 = 2NF3

Now, to know how many grams, of N2 is needed to completely react with 105 g F2 and since the molar mass of N2 is 28.02 g/mol, Molar mass of F2 is 38 g/mol, number of moles attached to N2 and F2 in the reaction are 1 and 3 moles respectively, then we will have;

105 g F2 × 1 mol F2/38 g F2 × 1 mol N2/3 mol F2 × 28.02 g N2/1 mol N2

Option C is Thus correct

3. Convert 273.0 g of lead into moles.

Answers

Answer:

1.3175675675675604

Explanation:

does this need to be rounded?

A solution of 1.8274g of a polypeptide in 274mL of a aqueous solution has an osmotic pressure at 31.40 degrees C of 2.012 mmHg. The approximate molecular weight of this polymer is _____ g/mol.

Answers

Answer: Hence, the approximate molecular weight of the poymer is 64106 g/mol

Explanation:

[tex]\pi=CRT[/tex]

where,

[tex]\pi[/tex] = osmotic pressure of the solution = 2.012 mm Hg =  0.0026 atm

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of solute (polypeptide) = 1.8274 g  

Volume of solution = 274 mL

R = Gas constant = [tex]0.0821Latm/Kmol[/tex]

T = temperature of the solution = [tex]31.40^0C=(273+31.40)K=304.4K[/tex]

Putting values in above equation, we get:

[tex]0.0026=\frac{1.8274 g\times 1000}{M\times 274ml}\times 0.0821\times 304.4[/tex]

[tex]M=64106g/mol[/tex]

Hence, the approximate molecular weight of the poymer is 64106 g/mol

Facts about flooding

Answers

Answer:

No region is safe from flooding. All 50 states are subject to flash floods.[1]

Flash floods can bring walls of water from 10 to 20 feet high.[2]

A car can be taken away in as little as 2 feet of water.[3]

To stay safe during a flood, go to the highest ground of floor possible. If your skin comes in contact with flood water, make sure to wash it with soap and disinfected water because the contents are unknown.[4]

Flooding is caused by spring thawing (snow and frozen grounds melting in the spring), heavy rains, snow melt runoffs, flash floods, and mudflows.[5]

Floods are the most widespread natural disaster aside from wildfires. 90% of all U.S. natural disasters declared by the President involve some sort of flooding.[6]

In preparation for a flood, it is important to stock up on first aid items, non-perishable foods, 3 gallons of water per person for 3 days, battery operated radio for weather reports, extra batteries, personal hygiene necessities.[7]

Based on Floodsmart, a 2,000 square foot home undergoing 12” of water damage could cost more than $50,000.[8]

Since flood damage is almost never covered by homeowners insurance, flood insurance is important for people living in high-risk flood zones.[9]

To stay safe during a flood, go to the highest ground of floor possible. If your skin comes in contact with flood water, make sure to wash it with soap and disinfected water because the contents are unknown.[10]

Communities particularly at risk are those located in low-lying areas, near water, or downstream from a dam.[11]

Why are most anions basic in H2O? Give formulas of four anions that are not basic.

Answers

Answer:

The anions that can act as bases (conjugate bases of weak acids) have the capability to hydrolyse water and produce OH− ions. Cl−, Br−NO−3, SO2−4 are all conjugate bases of strong acids that don't have the capability to hydrolyse water and so they aren't basic.

Explanation:

WDYT a mixture is? Please help

Answers

Answer:

A mixture is when two substances are physically combined and can be taken apart.

Explanation:

my words

Which statement are part of the safety protocol for this lab experiment?

Answers

Answer:

Always wear safety goggles when performing an experiment.

Use caution when constructing the track.  

Ensure that the track is clear before releasing cars.

Report all accidents to the teacher.

Explanation:

Can you help me please

Answers

Answer:

Explanation:

h

plsss help ive been stuck on this for a week

Answers

Answer:

Thomson's atom model.

Explanation:

His model is the plum pudding model of an atom. There are negatively charged subatomic particles or electrons placed within positively charged matter.

Hope this helps!

What is an important effect of gravity?

Answers

Answer:

pulling objects with mass closer to each other

Explanation:

that is the only role of gravity

From point A to point B, the car will . From point B to point C, the car will . Assuming the washer on the car is not blocked by the book, once the car hits the book, the washer will still have . This experimental design will examine Newton’s law.

Answers

Answer:

Accelerate, Have Constant velocity, Velocity, and First

Explanation:

Got it right on edge. have a wonderful day!!!

From point A to point B, the car will . From point B to point C, the car will assuming the washer on the car is not blocked . It will examine Newton’s law will be "Accelerate, Have Constant velocity, Velocity, and First."

What is Newton’s law ?

The link between an object's motion with even the forces acting on it is outlined by Newton's laws of motion, which were three fundamental principles of classical mechanics.

What is  velocity?

The displacement of the item in one unit of time would be the definition of velocity.

Therefore, from point A to point B, the car will . From point B to point C, the car will assuming the washer on the car is not blocked . It will examine Newton’s law will be "Accelerate, Have Constant velocity, Velocity, and First."

To know more Newton’s law and Velocity

https://brainly.com/question/27573481

#SPJ3

Can someone please fill in the blanks?

Answers

Answer:

g3gegsgehshhwwjwuwuwu2euyeeyeyyy

Answer:

helium formula He

Ammonia formula NH3

methane formula CH₄

chlorine formula  Cl-

Explanation:

HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP ​​

Answers

Answer:

but what is your question? it's just like the moon going around earth while earth along with all the other planets revolve around the sun

Explanation:

if water is added to a 0.70 molar solution of CuSO4 what will change



A. molarity will increase



B. Molarity will decrease



C. the amount of CuSO4 will decrease



D. No change in molarity or amount of salute

Answers

Answer:

B. Molarity will decrease

Explanation:

Molarity is one of the measures of the molar concentration of a solution. It is calculated by dividing the number of moles of the solute by the volume of the solvent. This means that the higher the amount of solute in relation to the volume of solvent, the higher the molarity of that solution.

In essence, adding water to a solution dilutes it i.e it increases the solvent's volume in relation to the solute, causing the molarity to decrease. In a nutshell, diluting a solution (by adding water or more solvent) causes the molarity of such solution to decrease. For example, if water is added to a 0.70 molar solution of CuSO4, the molarity of the solution will DECREASE.

During the daytime, we can see things because the sun is giving off
heat energy
light energy
sound energy
electrical energy

Answers

Answer:

light energy

.................

Answer:

light energy

Explanation:

heat does not effect how we see

the sun does not have sound

electrical energy does not effect how we see

Environmental factors can influence the way genes are ________________.

Answers

Answer:

Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

Explanation:

Please help I’ll even give you brainliet

What is the molecular formula for a compound that is 34.31% sodium, 17.93% carbon, 47.76% oxygen and has a molar mass of 134.00g?

Answers

Answer: Na2C2O4 probably sodium oxalate

Explanation: assume you have 100 g substance.

Mass of Na is m(Na) = 34.31 g, m(C) = 17.93 g and m(O) = 47.76 g.

Calculate moles n(Na) = 34.31 g/22.99 g/mol= 1.49 mol.

For C n(C) = 1.49 mol and n(O) = 2.985. You divide all by 1.49 you

Get n(Na) : n(C) : n(O) = 1:1:2 M(NaCO2) = 67 g/mol.

Divide 134:67 = 2. You get formula Na2C2O4

Help please for this problem.

Answers

1 mol of co2 is 44.01 grams. So we know that 70/44.01= 1.59 moles of co2 were consumed

1.59 mol co2 / 4 mol co2 = mol c2h2 / 2 mol c2H2

So mol of c2h2 is .79 mol
There is 27.04 grams in a mol of c2h2,
So we have 0.79*27.04=21.5 grams of c2h2

Which of the following best describes the difference between metals and nonmetals?

a
metals tend to have low melting points and nonmetals have high melting points
b
nonmetals are more reactive than metals
c
metals are brittle and dull
d
metals have high melting points and are malleable, whereas, nonmetals have lower melting points and tend to be brittle.

Answers

Answer:

the answer is d.

Explanation:

because metals are refers to natural elements that are hard, shiney, opaque, and dense. nonmetals implies thise chemical substances that are soft, non-shiney, transparent and brittle.

Which set of coefficients will balance this chemical equation?

__C2H4(g) + __O2(g) → 2CO2(g) + 2H2O(g)

Answers

Answer:

Explanation:

USE UR PERDICIRTON TABLE  

In an experiment, how many variables should you change at a time? And why?

Answers

Answer:

it should test one variable at a time.

Explanation:                                                                                                  because you will not be able to tell which variable is responsible for the observed results.

Explain what you discovered from the Simulation about why food coloring spreads faster in warmer water.

Answers

Answer:

The food colouring mixes through the hot water faster than it mixes with the cold water, this is because in hot water the water molecule have more energy and are moving faster than the molecules of cold water .This makes it easier for the food colouring to get mixed quickly through the hot water.

PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND

Answers

Answer:

A, B, C

Explanation:

Answer:A, b, c

Explanation

HELP ME PLEASE ILL GIVE EC AND BRAINLESTPhotosynthesis
Matter and Energy
Claim-Evidence-Reasoning
Name:
Date:
Scenario
Below is the equation of photosynthesis. Photosynthesis is a process that takes place in plants.
Notice that CO, and water are converted into sugar and oxygen.
External Data
600,
6 H,0
Water
light Cº,
+
602
+
Oxygen
ton Dede
Sugar
Prompt:
When you go home Dnight, your mother asks you to explain to her what happens during the
process of photosynthesis. Your mother is a science teacher, so make sure you use scientific terms
to give her a scienífic explanation of how energy is stored as sugar in plants through
photosynthesis.
I
Claim:
Evidence:
Reasoning:
Rebuttal:

Answers

Answer:

photosynthesis happens when spring is happening because of the pollen and soil

Explanation:

Characteristics of a substance that describe its' ability to change into a different substance are called?

Answers

A characteristic of a pure substance that describes its ability to change into different substances. chemical change. A change that occurs when one or more substances change into entirely new substances with different properties. physical property.

2. Have you ever seen a natural event that surprised

you? Why was it surprising?

Answers

Answer:

I have seen many lightning storms before. However, one of the most surprising ones was when I was at my house. It was around midnight when I awoke from the sound of lightning in the distance. I was also half awake so this could be another reason this was the most surprising, but lightning struck near my area. i could see the light through my curtains and the sound was loud enough to awake everyone in my house, even the deep sleepers. I practically jumped out of bed.

I’ve seen an tornado. It was surprising because I didn’t think they would be a big or dark as they really are.

Which statement best describes the polarity of the molecule Sil4?

Answers

Answer:

I dont a picture

Explanation:

but the answer is 24

The Olympian swam 200 meters in 20 seconds.
1) velocity
2) acceleration
3) speed

Answers

Answer: velocity

Explanation:

The answer is 3) Speed.
Velocity describes speed and direction.
Accelerate is an increase of rate and speed

Question number 12 I need help

Answers

Answer: Its B.

Explanation:

i cant quite explain

A clownfish uses a sea anemone as a safe place to live. While living there, the clownfish lures in food for the anemone. This is an example of what type of relationship?

Answers

do you possibly have a picture by vhanec?
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