What is density? How do you find it?

Answers

Answer 1

Density is the measure of a mass per unit volume of a material substance

density= Mass/volume

The unit of density is g/cm^3


Related Questions

Earth and Jupiter are shown next to each other. Earth is much smaller than Jupiter.
Why is Jupiter so much larger than Earth? Check all that apply.

Inner planets were created at higher velocities.
Outer planets have less gravity than inner ones.
Outer planets attracted helium, hydrogen, and other gasses.
Inner planets formed where temperatures were cooler.
Gases escaped from inner planets and not from outer ones.

Answers

Answer:

A, C, and E. I hope you have a good day.

Explanation:

Answer:

1, 3, and 5

Explanation:

2. What evidence is there that green ink is a mixture?

Answers

Answer:

The fact that the green ink separated from the rubbing alcohol proves that it is indeed a mixture.

Drag the appropriate answer to the correct location on the concept map below.

Answers

Hey I think you forgot to add the map image, if you can I can help you with it.

How are elements arranged on the periodic table?

a. they are arranged to highlight similarities between elements
b. they are arranged to highlight different elements with similar isotopes
c. they are arranged in order from most abundant to very rare and unstable
d. they are arranged in order of the date of discovery

Answers

Answer:

the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom.In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column.

The elements on the periodic table are arranged on the basis of highlighting similarities between elements. Thus, the correct option for this question is A.

How elements are arranged on the periodic table?

The elements on the periodic table are basically arranged on the basis of increasing their atomic number. These atomic number is represented by the number of protons in the nucleus of an element.

According to the question, the elements possessing identical chemical properties are arranged in the same group. For example, group 17 is known as the halogen group. Among this group, the elements bear one electron short to fulfill their octet.

The whole periodic table comprises of 18 groups and 7 periods.

Therefore, the elements on the periodic table are arranged on the basis of highlighting similarities between elements. Thus, the correct option for this question is A.

To learn more about the Periodic table, refer to the link:

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Calculate the no. of moles in 25gm of calcium phosphate

Plz Fast Urgent

Answers

Answer:

0.162 mol

Explanation:

n=m/M

M= 20*3 + 15*2 + 8*4*2

M=154 g/mol

n=25g/154g/mol

n=0.162 mol

The number of moles in 25 grams of calcium phosphate is 0.162 mol.

What are moles?

Mole is a SI unit that is used to measure the quantity of any substance in a specific amount. To calculate the moles, we will divide the mass of the substance by the molar mass of that substance.

n = m/M

Calcium phosphate is a chemical compound that contains calcium and phosphorus or phosphoric acid, and it is used to treat the low calcium in the body and thyroid and parathyroid.

The molar mass of calcium sulfate is 154 g/mol

The mass of calcium sulfate is 25 grams

Putting the value in the equation

n = m/M

n = 25g / 154 g/mol = 0.162 mol

Thus, the moles of calcium sulfate are 0.162 mol.

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A catalyst that has a different phase than the reactants is a(n) _______. A. exergonic catalyst B. endergonic catalyst C. homogeneous catalyst D. heterogeneous catalyst E. autocatalyst

Answers

Answer:  Heterogeneous Catalyst

Explanation:  The word heterogeneous means "different phases" or insoluble in science.  

Adding the number of protons to the number of neutrons determines what about the atom?
A
the atomic number
B
the atomic mass

(Hint: protons + neutrons = ?)

Answers

Number of protons is Z and number of neutrons is A-Z
The add the both
Z + A - Z
Z cancels to give A(Atomic mass)

Tyrone and Valerie wanted to determine what feature of a paper airplane would cause it to fly the farthest. Tyrone made his airplane with longer wings than Valerie's airplane. Valerie's airplane had shorter wings than Tyrone's. After testing the two airplanes several times, the data shows that wider wings help airplanes fly farther than shorter wings.

Which characteristic of science is missing from this experiment?

The question is not testable because paper airplanes are always changing.
The phenomenon is not observable because air resistance changes.
The experiment is not replicable because controlled variables are not included.
The results are not reliable because the airplanes were only tested one time.

Answers

The characteristic of science that is missing from this experiment is that "the results are not reliable because the airplanes were only tested one time".

Some of the characteristics of science include objectivity, verifiability , reliability, accuracy, observable, precision etc.

Based on the question asked, the results of the experiment are not reliable due to the fact that the the airplanes were only tested one time. The airplanes should have been tested multiple times to show that they are reliable.

In conclusion, the correct option is D.

Read related link on:

https://brainly.com/question/5500131

Answer:

D

Explanation:

Give reasons. mass is called a physical quantity.

Answers

Answer:

Mass is a Physical quantity

Explanation:

It is a fundamental physical quantity because it cannot be derived from other physical quantities.

.

.

.

Hope it helps

Iron is a type of metal that has a shiny surface. However, iron can rust easily. Explain

Answers

Answer:

Iron, as well as iron alloys, rusts because of a chemical reaction known as oxidation. When iron is exposed to moisture or oxygen, oxidation occurs. During this chemical reaction, iron is converted into iron oxide. ... Both oxygen and moisture are catalysts for rusting.

Answer:

Iron rusts because of of a chemical reaction known as oxidation. During the chemical reaction iron is converted to iron oxide, if it is left unaddressed, the iron oxide will spread, thereby jeopardizing the physical integrity of the iron.

i really need help please

Answers

Answer: its blank???

Explanation:

which elements are liquid in the periodic table?

Answers

Bromine, Gallium, Caesium, Francium, Chlroine, Oxygen, Helium, Argon, Copernicium, and Barium

How do double replacement reactions relate to Combustion reactions

Answers

Explanation:

A single-replacement reaction replaces one element for another in a compound.

A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.

A precipitation reaction is a double-replacement reaction in which one product is a solid precipitate.

Solubility rules are used to predict whether some double-replacement reactions will occur.

WHATS H2O??????????????

Answers

Answer: H2O is the chemical symbol for water

Answer:

Explanation:

water

H. 2. O is the chemical formula for water, meaning that each of its molecules contains one oxygen and two hydrogen atoms

How long does S waves travel through earths crust

Answers

Answer:

For the distance range 50 to 500 km, the S-waves travel about 3.45 km/s and the P-waves around 8 km/s.

IF HELPED MARK AS BRAINLIEST

Answer:

For the distance range 50 to 500 km, the S-waves travel about 3.45 km/s and the P-waves around 8 km/s.

i need help with this

Answers

Answer:

1. The graph is showing the monthly rainfall between April to July.

2. The month is on the X axis.

3. The inches of the monthly rainfall is on the Y axis.

Use you observation to determine which polymorph is in the customer’s returned chocolate sample.

Answers

Answer:

Cocoa butter, the fat in chocolate, can crystallize in any one of 6 different forms (polymorphs, as they are called). Unfortunately, only one of these, the beta crystal (or Form V), hardens into the firm, shiny chocolate that cooks want. Form VI is also a stable hard crystal, but only small amounts of it form from the good beta (Form V) crystals upon lengthy standing. When you buy commercial chocolate it is in the form of beta crystals.

When you melt chocolate and get it above 94° F, you melt these much desired beta crystals and other types of crystals can set up. If you simply let melted chocolate cool, it will set up in a dull, soft, splotchy, disgusting-looking form. Even the taste is different. Fine chocolate has a snap when you break it and a totally different mouthfeel from the other cocoa butter forms.

Answer:

When you melt chocolate and get it above 94° F, you melt these much desired beta crystals and other types of crystals can set up. If you simply let melted chocolate cool, it will set up in a dull, soft, splotchy, disgusting-looking form. Even the taste is different. Fine chocolate has a snap when you break it and a totally different mouthfeel from the other cocoa butter forms.

Explanation:

hope it's help you......!!!!!!!

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Water and carbon dioxide being converted to glucose

a
Chemical Change
b
Physical Change

Answers

Answer:

Chemical change

Explanation:

During an experiment, it is observed that iron powder sinks in water and sulfur powder floats in water. What will most likely be observed when sulfur powder and iron powder are mixed together and then added to water?

Answers

Answer:   The iron will sink and the sulfu will float

Explanation:  The iron/sulfu mixture only mixes the two elements.  Unless one ignites them, they will remain elements and can be separated based on the difference in their densities.

1. The compound 2NaCl consists of A.2 atoms of sodium element B. 1 atom of
chlorine element C. 3 atoms of sodium element D. 1 atom of sodium element
2. The valency of iron in iron (III) sulphate is A.3 B.2
C.4
D.5
3.The systematic name of the compound Cuso, is A. Copper (I) sulphate B.Copper
(II) tetraoxosulphate C.Copper (II) tetraoxosulphate (IV) D.Copper (II)
tetraoxosulphate (VI)​

Answers

Answer:

1. The compound 2NaCl consists of:

» B. 1 atom of chlorine element.

» D. 1 atom of sodium element.

2. The valency of iron in iron (III) sulphate is:

» A. 3 [ valency of only iron ]

» B. 2 [ valency of only sulphate ion ]

3.The systematic name of the compound CuSO4:

» B. Copper (II) sulphate

Explanation:

[tex].[/tex]

Answer:

1) A.

2) A.

3) A.

At constant pressure and volume, the density of a gas _____ as the molar mass increases. A gas made of heavier particles will have a _____ density than a gas composed of lighter particles under the same conditions of temperature and pressure.

Answers

Answer:

Increases, higher

Explanation:

Remember that the formula for Density is D=mass/volume.

If volume remains the same, as mass increases the density will also increase as the numerator of this math problem increases while the denominator remains the same.

(a) At constant pressure and volume, the density of a gas increases as the molar mass increases.

(b) A gas made of heavier particles will have a greater density than a gas composed of lighter particles under the same conditions of temperature and pressure.

Ideal gas equation

The relationship between density and molar mass is given in the following equations;

PV = nRT

PV = (m/M) RT

PV = (ρV/M)RT

P = (ρ/M)RT

P = (ρRT)/M

PM = ρRT

where;

P is pressureρ is densityM is molar mass

Thus, we can conclude that, at constant pressure and volume, the density of a gas increases as the molar mass increases.

A gas made of heavier particles will have a greater density than a gas composed of lighter particles under the same conditions of temperature and pressure.

Learn more about density of gases here: https://brainly.com/question/18992505

calculate the mass of iron (iii) carbonate that will be formed when 15.0 mL of 0.15 M iron (iii) chloride solution are reacted with 20.0 mL of 0.15 M sodium carbonate. Be sure to write the balanced metathesis reaction that is occuring.

Answers

Answer:

The molar mass of a substance is calculated as the mass of a given chemical compound or substance, which is then divided by the amount of the substance. The mass is calculated in grams and the amount of the substance is calculated in mol. Thus, the standard unit for molar mass is g/mol.

Explanation:

According to the given question, the reaction between iron chloride and sodium carbonate will be given as:  

[tex]\text {3Na_{2}CO_{3}\text} \;\[+\] \;\text{ 2FeCl_{3} \text}\; \rightarrow\; \text {6NaCl}\; \[+\] \;\text { Fe_{2} (CO_3)_{3} \text}[/tex]

Now, to calculate the mass of iron carbonate formed in the above chemical reaction, it will be given as:

[tex]{ \text Moles\;of}\text \;\text {FeCl_{3} \text} \[=\dfrac{0.15 \;\text {moles} \times 0.015\; \text L}{1.0 { \;\text L}\text}[/tex]

                         

                          [tex]=\;0.00225\; \text {moles}\text[/tex]

Similarly, for sodium carbonate

[tex]\text Moles\; of\; Na_{2}CO_{3}}\te \[=\]\dfrac{0.15 \;\text {moles} \times 0.020\; \text L}{1.0 { \;\text L}\text}\\[/tex]

                         

                             [tex]\[=\]\;0.0003\; {\text moles \text}[/tex]

Limiting reactant is [tex]\text {FeCl_{3} \text}[/tex]

Now, calculating iron chloride mass:

[tex]=\dfrac{0.00225 \times 1\;\text{moles}\;\text{Fe}_2 {(\text{CO}_3)}}{2\;\rm{moles\;of\;}Fecl_3}[/tex]

[tex]=0.001125 \;\text {moles }[/tex]

Now, molar mass of the [tex]\text{Fe}_{2}\text{CO}_{3}[/tex]  will be  [tex]=291.71679\;\text{g/ mol}[/tex]

[tex]\begin{aligned}\text{Mass}&=\frac{\text{Moles}}{\text{Molar mass}}\\\\&=\frac{0.001125\;\text{moles}}{291.71679\; \text{g/mol}} \\\\&=3.85648\times10^{-6} \end{aligned}[/tex]

Is it correct or wrong

Answers

Answer:

i think correct

Explanation:

i am not sure but i hope it will help you

Help me,I’m so confused ..and explain pls

Answers

Answer:

1. is 50...

75/1.5 = 50

2. is 600...

300/5 is 600

3.

Part A: 45 minutes= 0.75 hours

Part B: 5.3

Explanation:

Don't agree? The calculator says other wise....

i checked it its correct.

MAY SOMEONE HELP ME PLZZ

A tire company wants to determine what kind of rubber will last the longest for their tires. What are some variables that the researchers will want to make controlled variables?

Answers

Answer: Rubber source, temperature, thinkness, thread design, driving pattenrs, weather, etc.

Explanation: There are many variables. Here are a few I would include in a tire lifetime study:

1. Type of rubber, including source

2. Thickness of tire

3. Design of tire thread

4. Life as a function of average speed and road surface

5. Expected outside temperature and wet conditions

6. Driving conditions of speed and both acceleration and deceleration parameters (e.g., tire life when slamming on the brakes or accelerating quickly)

What is the process in which matter changes from the liquid to the solid state?
A. melting
B. freezing
C. boiling
D. vaporizing

Answers

Answer:

freezing

Explanation:

hope it is helpful

Answer:

freezing. b.

Explanation:

what is mass in chemistry definition?

Answers

Answer: mass is the amount of matter in one object or substance

Explanation:


2. All organisms obtain and use
In order to live.

Answers

Answer:

Energy . ......

Hope this helps you!

1. Is the reaction between magnesium and oxygen in the air spontaneous?

Answers

Answer:

Once ignited, a ribbon of magnesium metal burns freely in air to form solid magnesium oxide in the form of a white powder. The reaction is plainly spontaneous even though ΔS is negative.

A kind of scientific idea that tells you what will happen in a specific situation is a(n)

Answers

Answer:

technology scientific methods

Answer:

[tex]⚪ \: { \sf{law}}[/tex]

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