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
erastova [34]
3 years ago
15

Please I would give brainiest to anyone who answers number 2 and 3 for me

Chemistry
1 answer:
DerKrebs [107]3 years ago
6 0

can you upload a clearer photo?

You might be interested in
What factors does the climate include?
rosijanka [135]

Answer:

A. amount of precipitation, average temperature

Explanation:

Precipitation and average temperature are factors that climate includes. These factors are determined by other factors such as location of an area(like how far a place is from large bodies of water like the sea), ocean currents, lattitude (distance from the equator), winds (prevailing winds) , topography (such as mountains) and the like.

7 0
4 years ago
How is the periodic table arranged
Mashcka [7]
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
8 0
3 years ago
Number 7 plz tysm guys
morpeh [17]
It is letter C: Continental crust is thicker than oceanic crust.
6 0
3 years ago
Read 2 more answers
Of Be3+ , Li2+ , and He1+
Mama L [17]

Answer:He 1+

Explanation:

Both Hydrogen atom and helium ion are one electron species. Hence we expect the spectrum of the helium ion to closely resemble that of hydrogen atom also containing one valence electron.

5 0
3 years ago
A chemist has a 2.0 M solution of copper (II) sulfate. Is he takes 400 mL of this solution and dilutes it with 1200 mL of water,
Ksenya-84 [330]

0.66 M is the accurate molarity of the new solution of volume of 1200 ml.

Explanation:

Data given:

molarity of copper(II) sulphate, Mconc.= 2M

volume of 2M solution taken Vconc. = 400 ml

volume taken for dilution, Vdilute = 1200 ml

molarity of the diluted solution, Mdilute =?

We will use the formula for dilution as

Mconc Vconc = Mdilute x V dilute  (conc is concentrated)

putting the values in the equation:

2 x 400 = Mdilute x 1200

Mdilute = \frac{800}{1200}

   Mdilute  = 0.66 M

When the solution is diluted to the volume of 1200 ml its molarity changes to 0.66 M.

4 0
3 years ago
Other questions:
  • When a gas is Perfect, or Ideal, what properties can be related in an equation?
    5·1 answer
  • The formula for chlorine dioxide
    15·2 answers
  • Write a balanced equation showing how this nucleus decays to form an α particle: thorium−230.
    9·1 answer
  • What element is represented by the electron configuration [ar]4s23d8?
    14·1 answer
  • What is the product when magnesium reacts with nitrogen? Mg(s) + N2(g) → Mg2N3(s) Mg3N(s) Mg3N2(s) MgN3(s)
    11·2 answers
  • Why does a hydrogen atom look like it does
    13·2 answers
  • What kind of mixture would you have if you dissolve a spoonful of salt into a bucket of water and mix it well to from a soultion
    15·1 answer
  • What is the source of water as a reactant in photosynthesis
    5·2 answers
  • How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal? Show all o
    7·1 answer
  • On a roller coaster, where is maximum kinetic energy I’ll mark the brainiest.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!