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
icang [17]
3 years ago
8

4) How does an atom have a charge of -3?

Chemistry
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:

When the electrons hit the atoms in the chamber, they cause some of the electrons in the atoms to be stripped or knocked away. ... When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion. A negative ion can be made by adding an electron to an atom.

Explanation:

You might be interested in
In your own words, explain how/why precipitates form. Also explain what spectator ions are.
Andrej [43]

A precipitate is a product of a reaction that is insoluble in the reaction medium (usually water).

Why?

One of the signs that a reaction happened is that a precipitate forms. Let's take the reaction between Silver Nitrate (AgNO₃) and Sodium Chloride (NaCl) as an example:

AgNO₃(aq) + NaCl(aq) → AgCl(s)↓ + NaNO₃(aq)

In this reaction, Silver Chloride (AgCl) is an insoluble product of the reaction, and precipitates out of the reaction medium

If we write down the ionic equation, we find out the following:

Ag⁺ + NO₃⁻ + Na⁺ + Cl⁻ → AgCl(s) + Na⁺ + NO₃⁻

The ions that appear at both sides of the arrow are called spectator ions, since they are not directly involved in the process of the reaction, making the net ionic equation to be:

Ag⁺ + NO₃⁻ → AgCl(s)

Have a nice day!

#learnwithBrainly

6 0
4 years ago
Which statement about gases is true? A. They are made up of particles that always move very slowly. B. They are made up of parti
rosijanka [135]

Answer: D. They are made up of hard spheres that are in random motion.

Explanation:

A gas is a <u>state of aggregation of matter</u> in which, under certain conditions of temperature and pressure, <u>its molecules interact weakly with each other, without forming molecular bonds</u>, adopting the shape and volume of the container that contains them and tending to separate everything possible because of its <u>high concentration of kinetic energy</u>.

The molecules of a gas are practically <u>free</u> and have the ability to be distributed throughout the space in which they are contained because <u>the gravitational forces and attraction between them are practically negligible</u> compared to the speed at which they move. .

Therefore, gas molecules do not travel specific trajectories or vibrate in a stationary position, instead <u>they move quickly and randomly through the entire space of the container that contains them.</u>

7 0
3 years ago
Read 2 more answers
Directions: Identify each chemical equation as a synthesis, decomposition,
bija089 [108]

Answer: 9. decomposition 10. single displacement 11. synthesis 12. double displacement

Explanation: just know I know

8 0
2 years ago
What pressure would be required to take 100.0 ml of a gas at 103.0 kPa and squish it down to 2.00 ml
melamori03 [73]

Answer:

5150 kPa

Explanation:

Given that,

Initial volume, V₁ = 100 mL

Initial pressure, P₁ = 103 kPa

Final volume, V₂ = 2 mL

We need to find the new pressure of the gas. The relation between the pressure and the volume of gas is given by :

P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{103\times 100}{2}\\\\P_2=5150\ kPa

So, the new pressure is 5150 kPa.

7 0
3 years ago
You have a ballon filled with hydrogen gas which keeps it at a constant pressure, regardless the volume. The initial volume of t
abruzzese [7]

Answer:

619°C

Explanation:

Given data:

Initial volume of gas = 736 mL

Initial temperature = 15.0°C

Final volume of gas = 2.28 L

Final temperature = ?

Solution:

Initial volume of gas = 736 mL (736mL× 1L/1000 mL = 0.736 L)

Initial temperature = 15.0°C (15+273 = 288 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 2.28 L × 288 K / 0.736 L

T₂ = 656.6 L.K / 0.736 L

T₂ = 892.2 K

K to °C:

892.2 - 273.15 = 619°C

7 0
3 years ago
Other questions:
  • How does precipitation grow by ice processes
    14·1 answer
  • Poor thermal conductors. Poor electrical conductors. Brittle solids - not malleable or ductile. Little or no metallic luster. Ga
    6·1 answer
  • A 743 mL solution of HBr is titrated with 1.26 M KOH. If it takes 595.6 mL of the base solution to reach the equivalence point,
    5·1 answer
  • The function of a protein is dependent upon the shape into which the chain of amino acids folds. many noncovalent interactions a
    14·1 answer
  • 1. The creatures preserved in the Burgess Shale fossils are most closely related to modern
    15·1 answer
  • The Big Bang reasoning
    9·1 answer
  • Transition metals when moving from left to right on the periodic table?
    13·1 answer
  • Determine the ratio of electrostatic potential energies for CsF and Csl.
    8·1 answer
  • Alcohol or acid will travel the furthest up the paper chromatography? pls help thanks and explain
    14·1 answer
  • ) a student makes up a 0. 6 m solution of acetic acid. (note: the pka of acetic acid is 4. 74) a) what is the poh of this soluti
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!