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
Mariulka [41]
3 years ago
6

What has 39 neutrons which element

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

No of Neutrons =Mass No-No of protons

  • Proton=Neutron+1

\\ \sf\longmapsto x+1=39

\\ \sf\longmapsto x=39-1=38

  • Hence it has atomic no 38

The element is Stroncium(Sr)

You might be interested in
An enzyme reduces the energy necessary to start a chemical reaction. This means the rate of reaction will
guajiro [1.7K]

Answer:

Answers below

Explanation:

Just so you know you are very $T00PlD

8 0
2 years ago
The Wolff-Kishner reaction involves the reaction of an aldehyde/ketone with hydrazine in the presence of KOH. The process is use
Ivan

Answer:

in the attached image is the reaction mechanism.

Explanation:

The first reaction (reaction 1) shown in the attached image is the Wolff-Kishner reduction, which is characterized when the carbonyl is reduced to an alkane in the presence of a hydrazine and a base. In reaction 1, the aldehyde reacts with hydrazine to produce oxime. This mechanism begins with the attack of the amine on the carbonyl group. Proton exchange happens and the water leaves the molecule.

In reaction 2, the KOH is deprotoned in nitrogen and organized to form the bond between the nitrogen molecule. this deprotonation releases the nitrogen gas

6 0
3 years ago
To make a Br2 bond, how many total valence electrons are required?
lapo4ka [179]

Answer:

2. 14

Explanation:

To form Br₂ bond, a total of 14 electrons are needed.

Bromine is an element in the 7th group on the periodic table. It has 7 valence electrons.

  • In forming the bromine gas, the two atoms of bromine shares 7 electrons each.
  • These electrons are from their outermost shell.
  • The outermost shell is the valence shell.
  • So, two atoms donating 7 electrons gives 14 electrons.
6 0
3 years ago
How many grams of sucrose (c12h22o11) are in 1.55 l of 0.758 m sucrose solution? express your answer in grams to three significa
satela [25.4K]
The molecular formula of sucrose is - C₁₂H₂₂O₁₁
molecular mass of sucrose - 342 g/mol
molarity of sucrose solution is 0.758 M
In 1 L solution the number of sucrose moles are - 0.758 mol
Therefore in 1.55 L solution, sucrose moles are - 0.758 mol/L x 1.55 L
                                                                           = 1.17 mol
The mass of 1.17 mol of sucrose is - 1.17 mol x 342 g/mol = 4.00 x 10² g

7 0
3 years ago
Read 2 more answers
Find the moles in 0.0023 of Co, at STP:
Alexus [3.1K]
What is does that mean 0.0023 cooooo
7 0
3 years ago
Other questions:
  • Write a nuclear equation for the decay of Polonium 211
    9·1 answer
  • Stronger wind can carry larger particles of sediment. T or F
    6·2 answers
  • The atomic mass of 12C is 12.000000. Multiply the atomic mass of 12C by its abundance. Report the number to 5 significant digits
    6·2 answers
  • Saturated hydrocarbons contain carbon and hydrogen atoms that have ____ bond(s). \<br> 1 or 2?
    7·2 answers
  • Use the electronegativities in the periodic table above to determine which bonding pair forms polar covalent bonds.
    11·1 answer
  • The name of chemical formula
    12·1 answer
  • What is chemical equilibrium?​
    13·2 answers
  • Is this statement true or false? A chemical reaction is balanced when the number of atoms of each element is the same for both t
    12·1 answer
  • The molecules in a solid do not move.<br><br><br> True<br><br> False
    11·2 answers
  • Strontium metal reacts with aluminum chlorate to produce strontium
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!