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
Savatey [412]
2 years ago
7

Iron has a density of 7.86g/cm^3. Could a block of metal with a mass of 18.2g and a volume of 2.56cm^3 be iron? Show work and ex

plain.
Chemistry
2 answers:
Reptile [31]2 years ago
6 0

Mass=18.2g

Volume=2.56cm^3

=> Density =

=  >  \frac{mass}{volume}

=> Density=

\frac{18.2}{2.56}

=> Density=

7.1g/cm {}^{3}

hjlf2 years ago
5 0

First calculate density of the the metal (should equal to density of iron)

  • Mass=18.2g
  • Volume=2.56cm^3

\\ \bull\tt\longmapsto Density=\dfrac{Mass}{Volume}

\\ \bull\tt\longmapsto Density=\dfrac{18.2}{2.56}

\\ \bull\tt\longmapsto Density=7.1g/cm^3

Metal is not iron

You might be interested in
In the following reactions identify which substances are solid (s) or aqueous (aq). 1. Li,SO4( aq ) + MgCl, ( aq ) - 2LICI ( 2LI
IrinaK [193]

Answer:

Ok

Explanation:

4 0
2 years ago
Purchasing the correctly sized BMX bike is based on the height of the rider. In order to fit a customer, the salesman can use th
Phantasy [73]
Answer: Your best answer is A.

Explanation: 1.35 is a constant and thus is does not change. The equation can be simplified to-
“b = (0.29 x h)+ 1.35”
So, if your rider is say 60 inches tall, the equation would change to-
“b = (0.29 x 60)+ 1.35”
Then to-
“b = (17.4) + 1.35” or “b = 17.4 + 1.35”
And therefore the size of the BMX bike frame in inches would be-
“b = 18.75”

Hope this helped :)
5 0
2 years ago
What is the complete balanced equation for the reaction that occurs when lithium carbonate (Li2CO3) is heated?
Fed [463]
When heating lithium carbonate (Li2CO3), it will dissociate to Li2O and Co2. So the balanced chemical equation of this reaction is Li2CO3 = Li2O + CO2. 
7 0
3 years ago
In the following reaction 2C6H6 + 15O2 12CO2 + 6H2O how many grams of oxygen will react with 10.47 grams of benzene (C6H6)?
IRINA_888 [86]
2 C_{6}H_{6}  +  15O_{2} ----->\ \textgreater \  12CO_{2}  +  6H_{2}O




mol of benzene =  \frac{mass}{Mr}
                                = \frac{10.47g}{(6 * 12) (6 * 1) g/mol}
                                = 0.134 mol

mol of oxygen: 
                 ratio of C_{6} H_{6} :  O_{2}
                 =  2 : 15
                 =  1 : 7.5

: . mol of O_{2} = 0.134mol * 7.5
                                         = 1.01 mol

Mass of Oxygen = mol * Mr
                           = 1.01 mol * (16*2) g/mol
                           = 32.22g 

Note: Mr is molar mass
8 0
3 years ago
Which quantum number distinguishes the different shapes of the orbitals?
UkoKoshka [18]
The four quantum numbers are:
principle quantum number: this number describes the energy of orbitals. It describes the most probable distance between the electron and the nucleus.
angular quantum number: this number describes the shape of orbitals, and thus, describes the angular distribution.
magnetic quantum number: this number describes the number of orbitals and how they are oriented within the subshell
spin quantum number: this number determines the direction of the spin of the electron.

Based on the above, the quantum number that distinguishes the different shapes of the orbitals is the angular quantum number
7 0
3 years ago
Other questions:
  • What is an example of an organ A.pancreas B.blood C.insulin D.knee
    13·2 answers
  • How many protons are in nitrogen-15?
    10·1 answer
  • Where does the electrical energy produced through wave energy come from?
    12·1 answer
  • Consider the balanced chemical equation for the combustion of methane (CH4).
    5·2 answers
  • what is the primary function of the cells that make up the majority of cells in the muscular system ​
    8·1 answer
  • Explain why the speed of sound is faster in solids than in gases. Include two other factors Chapter 17 says the speed of sound c
    11·2 answers
  • Calculate the pZn of a solution prepared by mixing 25.0 mL of 0.0100 M EDTA with 50.0 mL of 0.00500 M Zn2 . Assume that both the
    7·1 answer
  • What is the net force of the plane
    12·1 answer
  • If sodium (Na) is combined with Chlorine (CI), the compound would have which formula? A. Naci 0 O B. CINa C. ClaNa D. Na2C14​
    7·1 answer
  • What is the density of a plastic ball that has a volume of 6cm) and a mass of 12g?<br> 50 cm3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!