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
Anna71 [15]
3 years ago
7

Identify an element when supplied with the natural abundance and mass of each isotope

Chemistry
1 answer:
lozanna [386]3 years ago
4 0

The element can also be called gold-197. It has Mass number is 197, atomic number is 79 and electrons 79, Atoms that have the same number of protons but different number of neutrons. Isotopes have identical numbers of protons and electrons.

You might be interested in
1. Describe the process of gene splicing.
AnnyKZ [126]

Answer:

The DNA is cut using special chemicals called restriction enzymes,.

DNA ligase are used to insert genes and other pieces of DNA into plasmids.

4 0
2 years ago
Mg+o2 balanced eaquation
Tanya [424]

Answer:

2Mg+O2=2MgO

balanced equation

hope it helps.

5 0
3 years ago
Read 2 more answers
Calculate the total energy, in kilojoules, that is needed to turn a 46 g block
neonofarm [45]

Answer: The total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

Explanation:

Given: Mass = 46 g

Initial temperature = -25^{o}C

Final temperature = 100^{o}C

Specific heat capacity of ice = 2.05 J/g^{o}C

Formula used to calculate the energy is as follows.

q = m \times C \times (T_{2} - T_{1})

where,

q = heat energy

m = mass

C = specific heat capacity

T_{1} = initial temperature

T_{2} = final temperature

Substitute the values into above formula as follows.

q = m \times C \times (T_{2} - T_{1})\\= 46 g \times 2.05 J/g^{o}C \times (100 - (-25))^{o}C\\= 11787.5 J (1 J = 0.001 kJ)\\= 11.787 kJ

Thus, we can conclude that the total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

7 0
3 years ago
Which of the following systems has the highest entropy?. . . A cup of ice at 0 degrees C. . A cup of water at 50 degrees C. . A
Sholpan [36]
Entropy is a measure of chaos or disorder in a system. For the first one, the system with the highest entropy is a cup of water at 0 degress centigrade.  For the second question, the system with the lowest entropy is  sugar crystals in 95 degrees centigrade cup of coffee. 
4 0
3 years ago
Read 2 more answers
What is true about a chemical reaction
MatroZZZ [7]

Answer: energy is transferred, but it can go to the products or the reactants.

Explanation: in a chemical reaction, the atoms and molecules that interact with each other are called reactants.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Does water roll or slide in wax paper?
    6·1 answer
  • Please match the orbital type with the correct number of orbitals
    14·1 answer
  • What is the volume of a sample of liquid mercury that has a mass of 76.2g, given that the density of mercury is 13.6g/mL?
    14·1 answer
  • Sodium and chloride ions readily combine because they have opposite charges.
    7·1 answer
  • How many moles of water are in 24.3 grams of water?
    12·2 answers
  • After a hypothesis is tested a scientist must do what next ?
    8·1 answer
  • CAN SOMEONE PLEASE HELP ME ASAP PLEASEE ANYBODY LITERALLY ANYONE OUT THERE PLEASE
    8·1 answer
  • How does a heat affect the chemical reaction? ​
    6·2 answers
  • Balance the following equation<br> mg(s)+ HCl H2)g)+MgCl2
    13·1 answer
  • Why do we experience lower temperature during ber months up to febuary?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!