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
Reil [10]
3 years ago
8

An atom of Fe has 30 neutrons. What is the mass number of this atom?

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

56

Explanation:

The mass number of an atom is a sum of its number of protons and neutrons. Iron (Fe) has an atomic number of 26. This means that it has 26 protons. Since we know it has 26 protons and are told it has 30 neutrons. The mass number of this atom of Iron is 26+30 = 56

Hope this helped!

You might be interested in
Phosphorous trichloride and phosphorous pentachloride equilibrate in the presence of molecular chlorine according to the reactio
umka21 [38]

Answer : The value of K_p at this temperature is 66.7

Explanation : Given,

Pressure of PCl_3 at equilibrium = 0.348 atm

Pressure of Cl_2 at equilibrium = 0.441 atm

Pressure of PCl_5 at equilibrium = 10.24 atm

The balanced equilibrium reaction is,

PCl_3(g)+Cl_2(g)\rightleftharpoons PCl_5(g)

The expression of equilibrium constant K_p for the reaction will be:

K_p=\frac{(p_{PCl_5})}{(p_{PCl_3})(p_{Cl_2})}

Now put all the values in this expression, we get :

K_p=\frac{(10.24)}{(0.348)(0.441)}

K_p=66.7

Therefore, the value of K_p at this temperature is 66.7

4 0
3 years ago
Which species is the reducing agent in a redox reaction? Chem is hard​
Mandarinka [93]

Answer:

<h2>The species that furnishes the electrons is called the reducing agent. In this case, the reducing agent is zinc metal.</h2>

Explanation:

<h2>Hopes this helps. Mark as brainlest plz!</h2>
6 0
3 years ago
ddt, dde, pcbs and pbdes are all ________ddt, dde, pcbs and pbdes are all ________.a biodegradable and do not persist in the env
qwelly [4]
The answer is <span>non-biodegradable and subject to bioaccumulation and/or bioamplification.


DDT (dichlorodiphenyltrichloroethane) is persistent, non-degradable insecticide and organic pollutant readily accumulated to soils and consequently affects organisms.
DDE (</span><span>dichlorodiphenyldichloroethylene) is non-degradable pesticide toxic to birds at the first place.
PCBs (polychlorinated biphenyls) are non-degradable organic compounds  very toxic to the environment.
PBDEs (polybrominated diphenyl ethers) are non-degradable compounds very toxic to environment, even able to affect brains of animals in the development period.</span>
5 0
4 years ago
In the formation of a macromolecule, what type of bond would join two amino acid subunits?
luda_lava [24]
I think its an Ionic bond although i am not sure about
8 0
4 years ago
Read 2 more answers
What is 8mm=___cm please help me
son4ous [18]

Answer:

0.8 cm

Explanation:

Hope that helped :D

5 0
3 years ago
Other questions:
  • What mass of Ba3(PO4)2 is contained in 1575 mL of a 0.35 M solution of Ba3(PO4)2?
    15·1 answer
  • What is gentle breeding
    11·1 answer
  • Which produces wave particles that move and displace one another? A) a radio B) a guitar C) a light bulb D) a microwave oven
    5·2 answers
  • Is mass conserved when 40 G of sodium hydroxide undergoes a chemical change during an interaction with 36.5 grams of hydrogen ch
    7·1 answer
  • The material that passes on _________ information is DNA.​
    8·1 answer
  • A gas is at an original pressure of 412 torr and a temperature of 79°C. What is the new temperature of the gas (in K) if the pre
    5·1 answer
  • A cylinder with a moving piston expands from an initial volume of 0.250 L against an external pressure of 2.00 atm. The expansio
    15·1 answer
  • Wht kind of particles contribute to an overall heating effect on climate?​
    8·2 answers
  • How many atoms of gold (Au) are equal to 212g of gold?
    7·1 answer
  • Explain any differences in the pulse rate at rest and after exercise ( in own words btw^^
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!