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
Mrac [35]
3 years ago
5

One isotope of a metallic element has the mass number 65 and 35 neutrons in the nucleus. the cation derived from the isotope has

28 electrons.
a. what is the symbol for the element?
b. what is the charge?
Physics
1 answer:
Lina20 [59]3 years ago
7 0
The mass number of an isotope is the sum of the numbers of protons and the numbers of the neutron. Given that the mass number is 65 and the number of neutrons is 35, the number of protons is 30. The atom is then Zinc (Zn). The charge is equal to +2, as it lacks 2 more electrons. 
You might be interested in
If a wave is traveling at 60cm/second and has a wavelength of 15 cm what is the frequency?
REY [17]
The frequency of the wave is 4 Hz
4 0
2 years ago
Separating the electron from the proton in a hydrogen atom takes 2.18 ✕ 10−18 j of work. through what electric potential differe
My name is Ann [436]
Electric potential = work done/charge of electron = 2.18×10⁻¹⁸/1.6×10⁻¹⁹
                                                                              =  13.625 V
6 0
2 years ago
Light of wavelength 633 nm from a He-Ne laser passes through a circular aperture and is observed on a screen 4.0 m behind the ap
Verizon [17]

Answer:

The answer is "1.144 \times 10^{-4} \ m".

Explanation:

w=\frac{2.44 \lambda L}{D}\\\\D=\frac{2.44 \lambda L}{w}\\\\

   =\frac{2.44 \times 633 \times 10^{-9}\times 4 }{0.054}\\\\=\frac{6178.08\times 10^{-9}}{0.054}\\\\=1.144 \times 10^{-4} \ m

8 0
3 years ago
A 55.0-g sample of hot metal initially at 99.5oC was added to 40.0 g of water in a Styrofoam coffee cup calorimeter. The water a
Kaylis [27]

Answer:

Cp= 0.44 J/g.C

This is heat capacity of metal.

Explanation:

From energy conservation

Heat lost by metal = Heat gain by water +Heat gain by  calorimeter

Because here temperature of metal is high that is why it loose the heat.The temperature of water and  calorimeter is low that is why they gain the heat.

final temperature is T= 30.5 C

We know that sensible heat transfer given as

Q= m Cp ΔT

m=Mass

Cp=Specific heat capacity

ΔT=Temperature difference

By putting the values

55 x Cp ( 99.5 - 30.5) = 40 x 4.184 ( 30.5- 21 ) + 10 x ( 30.5 - 21)

Cp ( 99 .5- 30.5) = 30.65

Cp= 0.44 J/g.C

This is heat capacity of metal.

4 0
3 years ago
Why is history open to ongoing and changing interpretations?
saveliy_v [14]
History is open to ongoing and changing interpretations because changing <span>values limit interpretation. 

So your answer is A.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the Energy (E) in joules for that wavelength and record it in the table below. Remember that E = HF, where h the Planc
    11·1 answer
  • Block A, with a mass of 6.0 kg, is sliding across a frictionless track at 65 m/s when it collides with Block B ( 9.0 kg) which i
    7·1 answer
  • If the accepted value of a wave is 121 m/s, who has the most accurate method of measuring the speed of a wave?
    7·1 answer
  • 3. Imagine a 10kg block moving with a speed of 20m/s<br> calculate the kinetic energy of this block
    8·1 answer
  • Name the four major forces in the universe that act over long distance as I greater than the nucleus of an atom?
    11·1 answer
  • How much of the electromagnetic spectrum is visible to us? A. All of it B. None of it C. Most of it D. A small part of it
    14·2 answers
  • A 20600 kg sailboat experiences an eastward force 17700 N due to the tide pushing its hullwhile the wind pushes the sails with a
    11·1 answer
  • Explain why you can hear two people talking even after they walk around a corner.
    5·2 answers
  • An electromagnetic wave has a frequency of 6.0 x 10^18 Hz. What is the wavelength of the wave?
    15·1 answer
  • Light waves can be easily blocked but ______ waves pass through all substances? ( fill in the blank)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!