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
Licemer1 [7]
3 years ago
6

An element's atomic number is 40. How many electrons would an atom of this element have?

Chemistry
1 answer:
icang [17]3 years ago
3 0
Hello my friend,
since atomic no. = no. of electrons
there will be 40 electrons in that atom.
if and element has 111 protons, atomic no. will be 111.
no. of neutron = 161 - 55 = 106 neutrons.
You might be interested in
PLEASE HELP ME
vichka [17]
Light moves in a straight line except at surfaces between different transparent materials, where its path bends.
4 0
3 years ago
Can anyone teach me what is criss cross method in chemistry​
Solnce55 [7]

Answer:

In the criss-cross method, the numerical value of the ion charge of the two atoms are crossed over, which becomes the subscript of the other ion. Using this technique, we will write the chemical formula of the given compounds.

Criss cross the absolute values to give Al2O3. To find the formula for magnesium oxide:- The oxidation number of Mg is +2 and oxygen is -2. Criss cross the absolute values to give Mg2O2In this example there is a common factor of 2 so divide by 2 to give MgO.

8 0
2 years ago
Which option best describes hydrolysis?
Bezzdna [24]
: A chemical process of decomposition involving the splitting of a bond by the addition of water.
7 0
2 years ago
What particles form the nucleus of an atoms?
melomori [17]

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

  • Protons are the positively charged particles in an atom
  • Neutrons do not carry any charges.
  • Sum of the protons and neutrons gives the mass number of the atom.
7 0
3 years ago
During the naval battles of the South Pacific in World War II, the U.S. Navy produced smoke screens by spraying titanium tetrach
hammer [34]

Explanation:

The reaction given is;

TiCl4 + H2O --> TiO2 + HCl

The reaction is not balanced, upon balancing it is given as;

TiCl4 + 2H2O → TiO2 + 4HCl  

a. How many moles of H2O are needed to react with 6.50 moles of TiCl4?

From the reaction;

1 mol of TiCl4 requires 2 mol of H2O

6.50 mol of TiCl4 would require x mol of H2O

1 = 2

6.5 = x

x = 6.5 * 2 / 1 = 13.0 mol

b. How many moles of HCl are formed when 8.44 moles of TiCl4 react?

From the equation of the reaction;

1 mol of TiCl4 reacts to form 4 mol of HCl

8.44 mol of TiCl4 reacts to form x mol of HCl

1 = 4

8.44 = x

x = 8.44 * 4 / 1 = 33.76 mol

4 0
3 years ago
Other questions:
  • Describe the contributions made by Oparin, Haldane, Miller, and Urey toward understanding the origin of organic molecules.
    7·1 answer
  • I need help with these two questions
    9·1 answer
  • Methionine, ch3sch2ch2ch(nh2)co2h, is an amino acid found in proteins. what is the hybridization type of each carbon, oxygen, th
    7·1 answer
  • For the reaction PCl5(g) 4 PCl3(g) 1 Cl2(g) Kp 5 23.6 at 500 K a. Calculate the equilibrium partial pressures of the reactants a
    7·1 answer
  • Which representative element has the largest atomic radius ?
    7·1 answer
  • This type of erosion picks up materials and transports them in the air, often causing the abrasion of surfaces.
    12·1 answer
  • What does it mean when a cell is multicellular? I only have 5 minutes so please help.
    10·1 answer
  • How many grams of CaO can be produced using 3.9 moles CaCO3?1<br> CaCO3 --&gt; 1CaO + 1CO *
    7·1 answer
  • If 16.4 grams of copper (II) bromide react with 22.7 grams of sodium chloride, how many grams of sodium bromide are formed?
    14·1 answer
  • Which of the following are products when magnesium metal is placed in hydrochloric acid? (Correct answer should be D but why)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!