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
emmasim [6.3K]
3 years ago
5

An atom has a negative charge. Which of the following must have occurred?

Chemistry
1 answer:
galina1969 [7]3 years ago
5 0
It should be A)It lost a neutron.
You might be interested in
if a gas sample has a pressure of 761 mmhg at 0.00°c by how much does the temperature have to decrease to lower the pressure to
Nady [450]
<h3>Answer:</h3>

272.43 K or -0.718°C

<h3>Explanation:</h3>

We are given;

The initial pressure,P1 as 761 mmHg

Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K

Final pressure as 759 mmHg

We are required to calculate the final temperature;

According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.

That is; Pα T

Therefore, at varying pressure and temperature,

\frac{P1}{T1}=\frac{P2}{T2}

To get final temperature;

T2=\frac{P2T1}{P1}

T2=\frac{(759 mmHg)(273.15K)}{761 mmHg}

T2=272.43K

Therefore, the final temperature will be 272.43 K or -0.718°C

6 0
3 years ago
Potassium carbonate dissolves as follows:
lara [203]

The 0.25 volume in liters of 1.0 M K_{2}CO_{3} solution is required to provide 0.5 moles of K(aq).

Calculation,

The Potassium carbonate dissolves as follows:

K_{2}CO_{3}(s) → 2K(aq) +CO_{3}^{-2} (aq)

The mole ratio is 1: 2

It means, the 1 mole K_{2}CO_{3} required to form 2 mole of K(aq).

To provide 0.5 mole of K(aq) = 1 mole ×0.5 mole /2 mole required by K_{2}CO_{3}.

To provide 0.5 mole of K(aq) ,0.25 mole required by K_{2}CO_{3}.

The morality of  K_{2}CO_{3} = 1 M = number of moles / volume in lit

The morality of  K_{2}CO_{3} =   1 M = 0.25 mole/ volume in lit

Volume in lit = 0.25 mole / 1 M = 0.25 mole/mole/lit = 0.25 lit

learn about moles

brainly.com/question/26416088

#SPJ4

5 0
2 years ago
The weight of a space shuttle is about 20.0 million newtons. What is the space shuttle's weight when it is traveling through out
pentagon [3]

the answer is 0.0 newtons

8 0
3 years ago
Read 2 more answers
I need 3 facts about each and similarities plz
k0ka [10]
Mitosis- asexual reproduction
Quick
for reproductive purposes

Meiosis-sexual reproduction
Takes longer
For repairing

3 0
3 years ago
Chose the two factors that work together to create the global wind patterns that operate in the atmosphere.
grin007 [14]
Global wind patterns are mainly determined by unequal heating of the earth's surface, changes in air pressure, and earth's rotation. Change in air pressure: Air mainly circulates due to change in air pressure. It moves from a region of high air pressure to the region of lower air pressure.
3 0
3 years ago
Other questions:
  • Write the balanced chemical equation for the combustion of ethane, , and answer these questions. (Use the lowest possible coeffi
    8·1 answer
  • Pushing down on the piston causes an increase in pressure and a decrease in the volume of the gas in the cylinder. This is BEST
    11·2 answers
  • An experiment produced 0.10 g CO2, with a volume of 0.056 L at STP. If the accepted density of CO2 at STP is 1.96 g/L, what is t
    7·2 answers
  • What do these substances have in common? apple juice, helium gas, salt water and copper wire
    12·2 answers
  • In coulombs, how much positive charge is there IN a barium nucleus? On a barium ion?
    8·1 answer
  • How is a new moon the same as or different from a total lunar eclipse
    13·1 answer
  • What can you determine about an element if you only know its group number on the periodic table?
    6·2 answers
  • Characteristics of a mixture?
    7·2 answers
  • When the Florida summer brings hot temperatures, what seasonal changes can be seen in plants?
    8·1 answer
  • What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!