1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Talja [164]
3 years ago
5

A rock occupies a volume of 20 cm3 and has a mass of 100 g. Find the density of Answer:_____________ this rock.

Chemistry
1 answer:
ycow [4]3 years ago
5 0

The density of rock = 5 g/cm³

<h3>Further explanation</h3>

Given

Volume of rock=20 cm³

Mass = 100 g

Required

Density

Solution

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}

ρ = density  

m = mass  

v = volume  

Input given values in formula

\tt \rho=\dfrac{mass~of~rock}{volume~of~rock}=\dfrac{100~g}{20~cm^3}=5~g/cm^3

You might be interested in
H3PO4 + NO2- e HNO3 + H2PO4​
melamori03 [73]

Answer:

The answer is nitric acid

Explanation:

Hope this helped Mark BRAINLIEST!!!

5 0
3 years ago
Part A:
uranmaximum [27]

Answer:

Part A = The mass of sulfur is 6.228 grams

Part B = The mass of 1 silver atom is 1.79 * 10^-22 grams

Explanation:

Part A

Step 1: Data given

A mixture of carbon and sulfur has a mass of 9.0 g

Mass of the product = 27.1 grams

X = mass carbon

Y = mass sulfur

x + y = 9.0  grams

x = 9.0 - y

x(molar mass CO2/atomic mass C) + y(molar mass SO2/atomic mass S) = 22.6

(9 - y)*(44.01/12.01) + y(64.07/32.07)

(9-y)(3.664) + y(1.998)

32.976 - 3.664y + 1.998y = 22.6

-1.666y = -10.376

y = 6.228 = mass sulfur

x = 9.0 - 6.228 = 2.772 grams = mass C

The mass of sulfur is 6.228 grams

Part B

Calculate the mass, in grams, of a single silver atom (mAg = 107.87 amu ).

Calculate moles of 1 silver atom

Moles = 1/ 6.022*10^23

Moles = 1.66*10^-24 moles

Mass = moles * molar mass

Mass = 1.66*10 ^-24 moles *107.87

Mass = 1.79 * 10^-22 grams

The mass of 1 silver atom is 1.79 * 10^-22 grams

5 0
2 years ago
Read 2 more answers
Use chemical formulas to write the equation for the reaction between carbon and oxygen
Mandarinka [93]
C=Carbon
O=Oxygen
Oxygen is a diatomic molecule, so the subscript two needs to be used after the O in the formula.
C+O2->CO2
Hope this helps!
7 0
3 years ago
A 0.105 L sample of an unknown HNO 3 solution required 35.7 mL of 0.250 M Ba ( OH ) 2 for complete neutralization. What is the c
oksano4ka [1.4K]

Answer: 0.17M

Explanation:

The equation for the reaction is :

2HNO3 + Ba(OH)2 —> Ba(NO3)2 + 2H2O

From the balanced equation, we obtain :

nA = mole of acid = 2

nB = mole of the base = 1

From the question, we obtain:

Va = Vol. Of acid = 0.105L

Ma = conc. Of acid =?

Vb = Vol of base = 35.7 mL = 0.0357L

Mb = conc. of base = 0.25M.

We solve for the conc. of the acid using:

MaVa / Mb Vb = nA / nB

(Ma x 0.105) / (0.25x0.0357) = 2

Cross multiply to express in linear form. We have:

Ma x 0.105 = 0.25 x 0.0357 x 2

Divide both side by 0.105. We have

Ma = (0.25 x 0.0357 x 2) / 0.105

Ma = 0.17M

Therefore the concentration of the acid(HNO3) is 0.17M

3 0
2 years ago
What does homogeneous mixture of elements mean
mina [271]

If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.

8 0
3 years ago
Other questions:
  • What occurs when ions from the the sun strike air molecules
    8·1 answer
  • The carbohydrates seen here contains 3 common elements.They are....
    11·2 answers
  • What does the frequency of a wave represent
    8·1 answer
  • What’s the most density thing out of
    10·1 answer
  • Which of these outdoor activities would you most likely participate in during the winter?
    11·1 answer
  • Where does the stonefish hide
    9·2 answers
  • How many moles of methane are produced when 82.6 moles of carbon dioxide gas react with excess hydrogen gas?
    7·1 answer
  • A 2.5% (by mass) solution concentration signifies that there is of solute in every 100 g of solution. 2. therefore, when 2.5% is
    6·2 answers
  • Jodie is studying the sleeping habits of various types of animals. She wants to know how long each type of animal sleeps during
    7·1 answer
  • What important material is absorbed by your digestive system besides water
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!