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
harina [27]
3 years ago
8

An object is described as being 350 K. What does this indicate about the object?

Chemistry
1 answer:
LuckyWell [14K]3 years ago
3 0
A would be the answer to this question
You might be interested in
1. How many Chromium atoms are found in 25.8 milligrams of Chromium?​
givi [52]

Answer: 51.9961 g/mol, don't know if it helps :)

Explanation:

7 0
3 years ago
Read 2 more answers
Brass is a substitutional alloy consisting of a solution of copper and zinc. A particular sample of red brass consisting of 79.0
Bas_tet [7]

<u>Answer:</u> The molality and molarity of zinc in the solution is 4.07 m and 28.11 M respectively.

<u>Explanation:</u>

Solute is the substance which is present in smaller proportion in a mixture and solvent is the substance which is present in larger proportion in a mixture.

We are given:

(m/m) % of Cu = 79 %

This means that 79 g of copper is present in 100 grams of alloy.

(m/m) % of Zn = 21 %

This means that 21 g of zinc is present in 100 grams of alloy.

As, zinc is present in smaller proportion. So, it is solute and copper is the solvent.

  • <u>Calculating molality of zinc:</u>

To calculate molality of the zinc, we use the equation:

Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ in grams}}

where,

m_{solute} = Given mass of solute (Zinc ) = 21 g

M_{solute} = Molar mass of solute (Zinc) = 65.3 g/mol

W_{solvent} = Mass of solvent (copper) = 79 g

Putting values in above equation, we get:

\text{Molality of Zinc}=\frac{21\times 1000}{65.3\times 79}\\\\\text{Molality of zinc}=4.07m

  • <u>Calculating molarity of zinc:</u>

To calculate volume of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

Density of solution = 8740kg/m^3=\frac{8740kg\frac{1000g}{1kg}}{1m^3\times \frac{10^6cm^3}{1m^3}}=\frac{8740g}{1000cm^3}=8.740g/cm^3

(Conversion factors used are:  1 kg = 1000 g &  1m^3=10^6cm^3  )

Mass of solution = 100 g

Putting values in above equation, we get:

8.740g/cm^3=\frac{100.0g}{\text{Volume of zinc}}\\\\\text{Volume of zinc}=11.44cm^3

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Molar mass of zinc = 65.3 g/mol

Volume of solution = 11.44cm^3=11.44mL     (Conversion factor:  1cm^3=1mL  )

Mass of zinc = 21.0 g

Putting values in above equation, we get:

\text{Molarity of zinc}=\frac{21\times 1000}{65.3\times 11.44}=28.11M

Hence, the molality and molarity of zinc in the solution is 4.07 m and 28.11 M respectively.

4 0
3 years ago
A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?
AlladinOne [14]
8.9 g/cm3 since density equals mass/volume or m/v you just divide 89 by 10 to get 8.9
4 0
3 years ago
Read 2 more answers
HURRY 10 POINTS!!!
BaLLatris [955]
Earths magnetic field is formed mostly by

B. SOLAR WIND
4 0
3 years ago
What is the probability that an offspring will have a<br> heterozygous genotype? |
Anastasy [175]

Answer:

25,50,25

Explanation:

5 0
2 years ago
Other questions:
  • Which of the following properly describes the movement of atoms as they represent the states of matter? Atoms making liquids hav
    7·1 answer
  • What inspired Mendeleev to create his organization for the elements
    11·1 answer
  • A 35 L sample of N2 is at 65 mmHg. What volume would the gas occupy at 74<br> mmHg? *
    8·1 answer
  • How many moles of NaCl are needed to make 10.0L of a 5 M solution of<br> Salt water?*
    8·1 answer
  • The law of conversion states that mass is never created or destroyed. Explain how this law requires all chemical equations to be
    15·1 answer
  • PLEASE HELP What's the mass in grams of 0.442 moles of calcium bromide, CaBr2? The atomic
    11·1 answer
  • 24g of methane were burned in an excess of air. What mass of water would be produced in the reaction assuming complete combustio
    14·1 answer
  • Ean rule for [Fe(Co) 2(No)2]​
    8·1 answer
  • Biologists classify all living things into __ kingdoms.<br> A.five<br> B.three<br> C.six<br> D.seven
    10·2 answers
  • A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!