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
sergeinik [125]
3 years ago
9

An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. Which is the

best conclusion that can be drawn?
The atom has 7 neutrons and 8 protons.
The atom has 7 electrons and 8 protons.
The atom has 8 neutrons and 7 electrons.
The atom has 8 electrons and 7 protons.
Chemistry
2 answers:
Yuri [45]3 years ago
6 0

Answer:

Explanation:

protons = mass - neutrons

protons are plus so there are 8 protons.

mass = 15

8 = 15 - neutrons

-7 = - neutrons

neutrons = 7

The first two answers are the same and both are correct.

sattari [20]3 years ago
6 0

Answer:

a

Explanation:

You might be interested in
Complete the word equation for making a salt.
dalvyx [7]

Answer:

acid +alkaline =salt and water

Explanation:

if an acid reacts with an alkaline they form salt and water

4 0
3 years ago
Read 2 more answers
List three ways the rate of solvation of sodium chloride in water may be<br> increased
r-ruslan [8.4K]

Answer:

1) Increasing temperature

2) Stirring

3) Increasing surface area  of salt by grinding it

5 0
3 years ago
Question 17
Maurinko [17]
I will say this is True….?
7 0
2 years ago
Read 2 more answers
Please answer for me thanks...
tatuchka [14]

Explanation:

Since mole ratio of O2 : NH3 = 7 : 4,

Volume of NH3 = 50dm³ * 4/7 = 28.57dm³.

5 0
3 years ago
A galvanic cell generates a cell potential of 0.32V when operated under standard conditions according to the reaction above. Whi
Ugo [173]

The complete question is shown in the image attached to this answer.

Answer:

C

Explanation:

Let us quickly remember that the EMF of a cell under non standard conditions in given by the Nernst equation.

This equation states that;

E = E°cell - 0.592/n log Q

Where

E = EMF under non standard conditions

E°cell= standard EMF of the cell

n = number of electrons transferred

Q = reaction quotient

If the reaction quotient is greater than 1 then cell potential is less than the standard cell potential.

The cell that generates the lowest cell potential is the cell depicted in option C because Q has the greatest positive value(Q<1).

6 0
3 years ago
Other questions:
  • Which compound is most likely to follow second-order kinetics in a substitution reaction? (ch3)2chbr ch3ch2br (ch3)3cch2br ch3br
    7·1 answer
  • Hard water deposits (calcium carbonate) have built up around your bathroom sink. which of these substances would be most effecti
    9·2 answers
  • A 100 gram glass container contains 200 grams of water and 50.0 grams of ice all at 0°c. a 200 gram piece of lead at 100°c is ad
    7·1 answer
  • Unlike the earth, the sun _____.
    6·2 answers
  • How many moles of air must escape from a 10-m  8.0-m  5.0-m room when the temperature is raised from 0c to 20c? assume the p
    10·1 answer
  • How many grams of CaSO4 (Molar mass = 136 g) can be produced if 15.4 g Ca3(PO4)2 (molar mass = 310 g) completely reacts?
    5·1 answer
  • I need help with two questions.
    6·2 answers
  • Can someone tell me the answer and how to do the problem?
    12·1 answer
  • Cell membranes are selectively permeable. This means that A. only water can move freely across the cell membrane. B. any substan
    11·1 answer
  • How do I solve this ?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!