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
Archy [21]
2 years ago
5

Yo sum help would be sick

Chemistry
2 answers:
Agata [3.3K]2 years ago
6 0

Answer:

A

Explanation:

faust18 [17]2 years ago
5 0

Answer:

see photo

Explanation:

PLATO answer

You might be interested in
( urgent help needed!! 50pts + brainliest )
Ivanshal [37]

Answer:

Thorium-234 option a .......

5 0
2 years ago
Read 2 more answers
What are some of the unique properties of water?
Zepler [3.9K]

Answer:

Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density

Explanation:

4 0
3 years ago
Read 2 more answers
A double-replacement reaction, the ____.
vladimir1956 [14]

Answer:

b. reactants are two ionic compounds.

Explanation:

A double-replacement reaction is different from a single-replacement reaction  because a double-replacement reaction is a reaction between two ionic compounds while in a single-replacement reaction one atom replace another atom. In addition, the product formed from a double-replacement reaction often precipitate from the given solution.

4 0
3 years ago
What are the oxidation numbers of the elements in the nitrite ion
zepelin [54]

Answer : The oxidation number of nitrogen and oxygen in nitrite ion is, (+3) and (-2) respectively.

Explanation :

Oxidation number : It represent the number of electrons lost or gained by the atoms of an element in a compound.

Oxidation numbers are generally written with the sign (+) and (-) first and then the magnitude.

When the atoms are present in their elemental state then the oxidation number will be zero.

Rules for Oxidation Numbers :

The oxidation number of a free element is always zero.

The oxidation number of a monatomic ion equals the charge of the ion.

The oxidation number of  Hydrogen (H)  is +1, but it is -1 in when combined with less electronegative elements.

The oxidation number of  oxygen (O)  in compounds is usually -2, but it is -1 in peroxides.

The oxidation number of a Group 1 element in a compound is +1.

The oxidation number of a Group 2 element in a compound is +2.

The oxidation number of a Group 17 element in a binary compound is -1.

The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.

The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

The given molecule is, NO_2^-

Let the oxidation state of 'N' be, 'x'

x+2(-2)=-1\\\\x-4=-1\\\\x=-1+4\\\\x=+3

Therefore, the oxidation number of nitrogen and oxygen in nitrite ion is, (+3) and (-2) respectively.

7 0
3 years ago
Manuel is heating one liter of water to its boiling point. If one liter of water starts to boil at 100 °C, at what temperature w
Goryan [66]

C im pretty sure because its twice the amount

4 0
3 years ago
Other questions:
  • 2 The change in the velocity of an object is defined as its​
    11·2 answers
  • Mercury has an atomic mass of 200.59 amu. calculate the mass of 3.0 x 10^10 atoms
    13·1 answer
  • Consider two bulbs seperated by a valce. Both bulbs are amintained at the same temperature. Assume that when the valve between t
    5·1 answer
  • Please help fast, I will give brainliest.
    6·2 answers
  • Which of the following statements is true regarding both theories and laws?
    12·1 answer
  • In roses, the color red is dominant (R), and the color white is recessive (r). Based on the Punnett Square, what is the probabil
    14·1 answer
  • Question 2 (0.5 points)
    6·1 answer
  • Water often has dissolved gases and other chemicals in it. When this water encounters rocks, the minerals in the rocks can be ch
    5·1 answer
  • Give the spectator ions for the reaction that occurs when aqueous solutions of H 2SO 4 and KOH are mixed.
    12·1 answer
  • _P4 + ____O2 → __P2O3<br><br> How do I balance this equation?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!