An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 mL. The height of the water rose to 7.0 mL. If the mass of the stone was 25 g, what was its density?

Answers

Answer 1

Answer:

Density = 5 g/mL

Explanation:

Given data:

Volume of water = 2.0 mL

Volume of water + stone = 7.0 mL

Mass of stone = 25 g

Density of stone = ?

Solution:

Volume of stone = (volume of water + stone) - volume of water

Volume of stone = 7.0 mL - 2.0 mL

Volume of stone = 5.0 mL

Density of stone = mass/ volume

Density = 25 g/ 5.0 mL

Density = 5 g/mL


Related Questions

Which of the following statements is true about the relationship between atoms and molecules? A. Most atoms are bonded together to make a molecule. B. An atom can be seen by scientists, but a molecule cannot. C. Atoms and molecules are the same and have no differences.​

Answers

Answer:

I believe the answer is A. molecules are larger than atoms so they should be visible and atoms and molecules are indeed different

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option A.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.  Most atoms are bonded together to make a molecule. Molecules combine to form compounds.

Therefore, the correct option is option A.

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A sample of methane gas collcted t a pressure of 0.0884 atm and a temperature of 6.00 C is found to occupy a volume of 26.5 L. How many moles of CH4 gas are in the sample? ____ mol

Answers

Answer:

0.1mole

Explanation:

Given parameters:

Pressure = 0.0884atm

Temperature  = 6°C  = 6 + 273  = 279K

Volume occupied  = 26.5L

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we are going to use the ideal gas equation:

           PV  = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas constant  = 0.082atmLmol⁻¹k⁻¹

T is the temperature.

  Insert the parameters and solve for n;

     0.084 x 26.5  = n x 0.082 x 279

              n  = 0.1mole

Can you help plzzz thank you

Answers

Answer:

It would be Container 3

Explanation:

Each of the containers has the same amount of salt.  Salinity refers to salt level.  Since the question is asking for the container with the greatest salinity, you are looking for the container with the least water (because it will be the saltiest out of all of them).  Container 3 has the least water.

Hope this helps :)

3 has less water so its saltier

An atom of cadmium that has 66 neutrons has a mass number of

Answers

Answer:

113

Explanation:

We are given that the atom of cadmium has 66 neutrons:

  Number of neutrons in Cd  = 66

Now;

 Mass number  = ?

The mass number of an element is the sum of the number of protons and number of neutrons

     Mass number  = number of protons + number of neutrons

 By the position of cadmium, it has an atomic number of 47 and this is the number of protons

     Mass number  = 47 + 66  = 113

The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?
A The force of the air resistance on the moving hammer

B The force of the person using the hammer

C The force of gravity pulling down on the hammer

D The force of the nail pushing in the opposite direction

Answers

Answer:

A

Explanation:

In simple terms: Hammer goes one way, air goes the other way.

Answer:

d

Explanation:

i took the test

What would be the molar mass of sodium?

Answers

Answer:

Explanation:    29.99g/mol

Answer:

23.0 g/mol

Explanation:

To find the molar mass of sodium or Na, look at the periodic table.

Then try to find where sodium is.

After that, then try to check the atomic mass of sodium.

The atomic mass of sodium is 23.0

So the molar mass is 23.0 g/mol

That's it. Molar mass means the same thing as atomic mass.

Hope it helped!

1. Convert 76.19g of Rb3Rn to moles
a. 0.16 moles
b. 6.28 moles
c. 36,450.06 moles

Answers

Answer: C, 36,450.06 moles

Explanation:

Molar mass=478.41

17.19gx478.41moles=36,450.06

what two types of evidence are used to classify organisms. Which animal shares the most traits with humans and do both lemurs and humans have the trait listed at Point D explain?

Answers

Explanation:

6.The main pieces of evidence that scientists use to classify organisms are essentially form and evolutionary relationships.

9. chimpanzee

10. The answer is no, lemurs are not bipedal, i.e, they don't use two legs for walking like human do and they don't have language like ours.

jupiter is much more larger than earth , would gravity be weaker or stronger here?

Answers

Answer:

stronger

Explanation:

there is more gravity on Jupiter since it is bigger than earth

If 11 grams of a gas occupies 5.6 liters at STP, what is its gram molecular mass?
A) 11 g/mol B) 22 g/mol
C) 44 g/mol D) 88 g/mol

Answers

Answer:

(1) 25.0cal/g (2) 540cal/g (3) 327 cal/g (4) 8,180 cal/g 82 If 11 grams of a gas occupies 5.6 liters at STP, what is its gram molecular mass? (1) 11 g/mol (2) 22 g/mol

Convert 7.89 x 10^8 molecules of water to liters.



Help I have hw due and I don’t understand this question

Answers

Answer:

2.94 x 10⁻¹⁴L

Explanation:

To solve this problem, we have to assume that the condition of this water is at standard temperature and pressure, STP.

At STP;

       1 mole of gas have a volume of 22.4L

So, let us find the number of moles of this water first;

         6.02 x 10²³ molecules can be found in 1 mole of a substance

          7.89 x 10⁸ molecules will contain [tex]\frac{7.89 x 10^{8} }{6.02 x 10^{23} }[/tex]   = 1.31 x 10⁻¹⁵mole of water

So;

        Volume of water  = 22.4 x 1.31 x 10⁻¹⁵  = 2.94 x 10⁻¹⁴L

20 milliliters of water are poured into a graduated cylinder. A sample of metal is added. The water rises to the 32-milliliter line. What is the volume of the piece of metal?

Answers

Answer:

12

Explanation:

32-20= 12

This is because when the metal is added it adds to the volume of the liquid hence to find the metal itself subtract the final volume from Intel volume

[tex]\tt \underline{Answer:}[/tex]

12

[tex]\tt \underline{Explanation:}[/tex]

The water increases/rises to the 32 milliliter line, and before it was 20 milliliters of water in a graduated cylinder. So...to identify/find the volume, you can basically subtract.

32 - 20 = 12.

~Hope this helps! :)

BrainlyAnime ♪

CAN SOMEONE PLEASE TELL ME HOW DO I WRITE NITROGEN WITH THE "IDE" ENDING? PLEASE AND THANK YOU

Answers

Is “Nitride” what you are looking for? I believe it is Nitride!

Answer:

Nitride.

Explanation:

Have a good day, friend.

sound travel through water at a speed of 1500 m/s. if the frequency of a sound is 1000 Hz, what is the wavelength?

Answers

Answer:

λ  =  1.5 m

Explanation:

Given data:

Speed of wave = 1500 m/s

Frequency of sound = 1000 Hz

Wavelength of sound = ?

Solution:

Speed of wave = frequency × wavelength

by putting values,

1500 m/s  = 1000 Hz ×  λ

λ  =  1500 m/s  / 1000 s⁻¹     (Hz =  s⁻¹ )

λ  =  1.5 m

Answer: 1.5

Explanation:

Well first you do

1500/ 1000= 1.5 which mean

The wavelength is 1.5

How many formula units are in 2.58 moles of Caci.?

Answers

Answer:

1.55 x 10²⁴ formula units

Explanation:

Given parameters:

Number of moles of CaCl₂   = 2.58moles

Unknown:

Formula units in the compound  = ?

Solution:

To solve this problem, we must understand that;

    1 mole of a substance contains 6.02 x 10²³ formula units

   2.58 moles will contain 2.58 x  6.02 x 10²³ formula units  

                                            = 1.55 x 10²⁴ formula units

In which situation is the speed of the car constant while its velocity is changing?
A)
The car travels down a straight track at 30 m
s
m
B)
The car travels around a circular track at 30
S
The car begins from rest and accelerates to 20
S
D)
m
The car begins traveling at 30
m
and slows to 15
S
En

Answers

Answer is B hope it helps

is an example of an element and example of a compound

Answers

Answer:

Only some elements

Explanation:

If the surroundings gain energy, then the system
energy. *
1 point
gained
produced
lost
destroyed

Answers

Answer:

Option C: Lost.

Explanation:

Lost is your answer.

Balance the Chemical Equations

Rb + RbNO3---> Rb2O + N2

please help me

Answers

Answer:

10Rb° + 2RbNO₃  =>  6Rb₂O + N₂

Explanation:

Given:   Rb° + RbNO₃ => Rb₂O + N₂

=> 1st balance rubidium in RbNO₃ against Rb₂O  by inserting a '2' coefficient before RbNO₃ and a '6' coefficient  before Rb₂O

=> Rb° + 2RbNO₃  =>  6Rb₂O + N₂   => Oxygen and Nitrogen are balanced. All that remains is balancing Rb by inserting a '10' coefficient.

=>  10Rb° + 2RbNO₃  =>  6Rb₂O + N₂

Note: In balancing chemical equations, saving an element that is not part of a compound until last frequently gives balance by inspecting the number of elements of the specific kind and boosting its coefficient to balance the equation.  

Balanced equation =>  10Rb° + 2RbNO₃  =>  6Rb₂O + N₂

The balanced chemical reaction can be of the equation given is [tex]2Rb + RbNO_3 - > Rb_2O + N_2[/tex].

We need to make sure that the amount of atoms of each element is the same on both sides of the equation in order to balance the chemical equation [tex]Rb + RbNO_3- > Rb_2O + N_2[/tex].

By counting the atoms in each element, we may begin to balance the equation. We have one Rb, one Rb, one N, and three O atoms on the left side. We have two Rb, one N, and two O atoms on the right side.

We can add a coefficient of 2 in front of [tex]RbNO_3[/tex] to balance the Rb atoms, which gives us:

[tex]2Rb + RbNO_3 - > Rb_2O + N_2[/tex]

Thus, now, the equation is balanced with two Rb atoms on both sides.

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Which of the following is a polar molecule?
A. A linear Carbon dioxide molecule (C02)
B. A carbon monoxide molecule (CO)
C. A calcium oxide molecule (CaO)
D. An oxygen molecule (02)

Answers

Answer:

B. A carbon monoxide molecule(CO)

Explanation:

CO is polar because oxygen is more electronegative than carbon, so it gives oxygen a partial negative charge and carbon and partial positive charge. This causes a net dipole moment. CO2 is linear with no net dipole moment because each C-O bond is equal and opposite to each other, so they equal 0, which makes them non polar.

The answer will be (B) hope this helps!

The percent composition of carbon in acrylonitrile is
a 5.690%
b 67.89%
С
47.90%
d 22.646%

Answers

Answer:

67.89

Explanation:it’s right

The percent composition of carbon in  compound of acrylonitrile is 22.646%.

What is percent composition?

Percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates mass of element  to mass of compound  as,mass of element/mass of compound×100.

Percent composition helps in elemental analysis of compound which is useful in analysis of ores also.  It helps in making solutions while performing the titrations.  It helps in prediction of chemical formula which can be predicted by mass and molar mass of an element.

The compound acrylonitrile  has a molar mass 53.06 g/mole and that of carbon is 12 g/mole thus, percent composition of carbon in  compound of acrylonitrile is 12/53.06×100=22.646%.

Thus, the percent composition of carbon in  compound of acrylonitrile is 22.646%.

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8 moles Cl to grams 3

Answers

Answer: I don’t understand what your asking elaborate more

Explanation:

This chart show the amount of radioactivity measured from three unknown isotopes.


Which statement describes each of the isotopes?

Isotope A was measured at day 24, Isotope B was measured at day 6, and Isotope C was measured at day 10.
Isotope A was measured at day 18, Isotope B was measured at day 4, and Isotope C was measured at day 5.
Isotope A was measured at day 24, Isotope B was measured at day 8, and Isotope C was measured at day 20.
Isotope A was measured at day 30, Isotope B was measured at day 6, and Isotope C was measured at day 10.

Answers

Answer:

We are asked to describe the half-life of the radioactive materials.

Hence the 3rd option is correct

(Help if you know) What is one way land helps reduce the force of a hurricane as it moves inland?
A) land stabilizes the sediment forced on shore
B) Land filters the water forced up from the sea by the wind
C) Land acts as a bumpy surface that absorbs wind power
D) land absorbs the rainwater

Answers

i’m pretty sure it’s C bc the more bumpy the land is the slower the hurricane goes

Which element has the largest atom (longest atomic radius) and which element has the smallest atom (shortest atomic radius)?

Answers

Answer:

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.


1.Which group of numbers can divide 54 with no remainder?
A. 1, 2, 5, 7, 12,54
B. 1, 2, 6,9, 27,54
C. 2, 4, 6, 8, 26, 54
D. 1, 2, 7, 8, 29,54​

Answers

Answer:

The answer is B. 1,2,6,9,27,54

Explanation:

3. The two main driving forces of the water cycle are the Sun and...
1 gravity
2 wind
3 volcanoes
4 rain

Answers

Pretty sure it’s 4 don’t at me tho
The answer for this questions is rain

In an ionic compound, the negative and positive ions are held together by __________.

Answers

Answer:

the third one

Explanation:

How many grams are in 0.133 moles of NH4CIO3?

Answers

Answer:

53.49146

Explanation:

at stp what is the volume of 5.35 moles of methane ch4​

Answers

Answer:

22.4 L

Explanation:

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