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
Lady_Fox [76]
4 years ago
3

Which element is a halogen

Chemistry
2 answers:
Nonamiya [84]4 years ago
7 0
The Halogens are:<span>Fluorine.Chlorine.Bromine.Iodine.<span>Astatine</span></span>
Citrus2011 [14]4 years ago
4 0
Halogens are, Five related non-metallic elements, such as,  chlorine, fluorine, bromine, iodine, and astatine are all monovalent, and readily form negative ions.





Hope that helps!!!
You might be interested in
A gas occupies 25.3 at pressure of 790.5 mmHg. Determine the volume if the pressure is reduced to 8.04 mmHg
taurus [48]

Answer:

2487.51.

Explanation:

As per Boyle's law temperature remaining constant the volume of an ideal gas is inversely proportional to its pressure.

pV= k

therefore, p1V1 = p2V2

here V1 = 25.3, p2 = 8.04mm Hg

pressure p1 = 790.5 mm Hg

this means that

25.3×790.5 = 8.04V2

⇒V2= 2487.51

Hence, the required volume is, 2487.51.

5 0
3 years ago
A gas occupies 100 mL at 150. kPa. Find its volume at 200. kPa. You must show all your work to receive credit. Be sure to identi
PtichkaEL [24]

The Boyle-Mariotte's law or Boyle's law is one of the laws of gases that <u>relates the volume (V) and pressure (P) of a certain amount of gas maintained at constant temperature</u>, as follows:

PV = k

where k is a constant.

We can relate the state of a gas at a specific pressure and volume to another state in which the same gas is at different P and V since the product of both variables is equal to a constant, according to the Boyle's law, which will be the same regardless of the state of the gas. In this way,

P₁V₁ = P₂V₂

Where P₁ and V₁ is the pressure and volume of the gas to a state 1 and P₂ and V₂ is the pressure and volume of the same gas in a state 2.

In this case, in the state 1 the gas occupies a volume V₁ = 100 mL at a pressure of P₁ = 150 kPa. Then, in the state 2 the gas occupies a volume V₂ (that we must calculate through the boyle's law) at a pressure of P₂ = 200 kPa.  Substituting these values in the previous equation and clearing V₂, we have,

P₁V₁ = P₂V₂ → V₂ = \frac{P1V1}{P2}  

→ V₂ = \frac{100 mL x 150 kPa}{200 kPa}

→ V₂ = 75 mL

Then, the volume occupied by the gas at 200 kPa is V₂ = 75 mL

6 0
3 years ago
In a neutral atom, the number of protons _______ the number of electrons.
sergejj [24]

Answer:

equal the number of electrons.

Explanation:

8 0
4 years ago
Read 2 more answers
Which of the following is a balanced chemical equation?
True [87]

Answer:

equation number 3 is balanced.

hope it helps ☺️!

8 0
3 years ago
A system gains 687 kJ of heat, resulting in a change in internal energy of the system equal to 156 kJ. How much work is done?
Maslowich

Answer:

w = -531 kJ

1. Work was done by the system.

Explanation:

Step 1: Given data

  • Heat gained by the system (q): 687 kJ (By convention, when the system absorbs heat, q > 0).
  • Change in the internal energy of the system (ΔU°): 156 kJ

Step 2: Calculate the work done (w)

We will use the following expression.

ΔU° = q + w

w = ΔU° - q

w = 156 kJ - 687 kJ

w = -531 kJ

By convention, when w < 0, work is done by the system on the surroundings.

4 0
3 years ago
Other questions:
  • NO2 and N2O4 undergo the reaction shown. When a sealed
    9·1 answer
  • M&amp;M balance equations
    13·1 answer
  • Why are negative ions larger than the neutral atom from which they form?
    10·1 answer
  • Explain how temperature and mass affect the appearance of stars
    8·1 answer
  • If there are 2.54cm in one inch how many Inches are in 19.9​
    5·2 answers
  • Which statement about the half-life of a radioactive sample is true?
    11·2 answers
  • Are ionic compounds stronger than covalent compounds?
    8·1 answer
  • What was the main purpose of the opportunity rover?
    5·2 answers
  • Which of the following can be used as chopping board because it is hard?
    7·2 answers
  • Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!