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
gogolik [260]
3 years ago
15

The elements in valence group 5 have how many valence electrons?​

Chemistry
1 answer:
Viefleur [7K]3 years ago
6 0

Answer:

5 valence electron

Explanation:

It is because the group number is equal to the valence electron.

You might be interested in
Will mark brainliest :) how many moles of a solute is present in 4.00 L of an 8.30 M solution?
andreev551 [17]

The answer is 33.2 moles of a solute is present in 4.00 L of an 8.30 M solution , Option A is correct .

<h3>What is Molarity ?</h3>

Molarity is defined as the amount of solute (in moles)in per litre of solution.

It is also known as molar concentration of a solution , It is expressed in mol/l

\rm M =\dfrac{moles \;of\; solute}{Volume \;of \;solution} \\\\\\\rm M = \dfrac{n}{V} \\

We can rearrange this equation to get the number of moles:

n= M * V

The molarity of solution is 8.3 M and the volume given is 4 litres

the moles will be n = 8.30 * 4 = 33.2 moles

Therefore 33.2 moles of a solute is present in 4.00 L of an 8.30 M solution , Option A is correct .

To know more about molarity

brainly.com/question/2817451

#SPJ1

5 0
2 years ago
The vapor pressure of pure water at 110 °C is 1070 torr. A solution of ethylene glycol and water has a vapor pressure of 1.00 at
Kitty [74]

Answer:

idkidkidkidkidkidkidkidkidkidklookitup

7 0
3 years ago
Read 2 more answers
How is an average mass different from a weighted mass
romanna [79]

In an average mass, each entry has equal weight. In a weighted average, we multiply each entry by a number representing its relative importance.

Assume that your class consists of 15 girls and 5 boys. Each girl has a mass of 54 kg, and each boy has a mass of 62 kg.

<em>Average mass</em> = (girl + boy)/2 = (54 kg + 62 kg)/2 = <em>58 kg</em>

<em>Weighted average (Method 1) </em>

Use the <em>numbers of each</em> gender (15 girls + 5 boys) ,

Weighted average = (15×54 kg + 5×62 kg)/20 = (810 kg + 310 kg)/20

= 1120 kg/20 = <em>56 kg</em>.

If you put all the students on one giant balance, their total mass would be

1120 kg and the average mass of a student would be <em>56 kg. </em>

<em>Weighted average (Method 2) </em>

Use the <em>relative percentages</em> of each gender (75 % girls and 25 % boys).

Weighted average = 0.75×54 kg + 0.25×62 kg = 40.5 kg + 15.5 kg = <em>56 kg</em>

Each girl contributes 40.5 kg and each boy contributes 15.5 kg to the <em>weighted average</em> mass of a student.

6 0
3 years ago
If 1.20 g of aluminum hydroxide reacts with 3.00 g of sulfuric acid, what is the mass of water produced?
BabaBlast [244]
 it would be 342 acid
4 0
3 years ago
Short Story: "The Pit and the Pendulum" by Edgar Allan Poe Quiz
Fudgin [204]
Impossible to perceive:
7 0
3 years ago
Read 2 more answers
Other questions:
  • (01.01 MC)
    12·2 answers
  • A solution of NaCl ( aq ) is added slowly to a solution of lead nitrate, Pb ( NO 3 ) 2 ( aq ) , until no further precipitation o
    8·1 answer
  • What are the oxidation numbers of the atoms in this reaction?
    9·1 answer
  • A sample of iron has a volume of 12 mL. If the mass of this object is 94 g, what is the density of iron? Will it sink or float i
    15·1 answer
  • A beaker contains 100.0 mL of pure water. A second beaker contains 100.0 mL of seawater. The two beakers are left side by side o
    14·1 answer
  • The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and in
    14·1 answer
  • How do I do question number 4?
    9·1 answer
  • Which statement can be made about the above passage
    8·1 answer
  • If an atom the atomic number 10 and the mass number 12, how many VALENCE electrons does it have?
    13·1 answer
  • Which explanation describes why seafloor spreading occurs?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!