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
True [87]
3 years ago
8

Magnesium ions can be precipitated from seawater by the addition of sodium hydroxide. How much sodium hydroxide in grams must be

added to a sample of seawater to completely precipitate the 88.4 mg of magnesium present?
Chemistry
1 answer:
Anna35 [415]3 years ago
8 0

Explanation:

Solution 86P

Here, we have to determine the amount of sodium hydroxide required to precipitate all of the Mg.

Mg2+(aq) +2 NaOH(aq) ------> Mg(OH)2 (s) + 2Na+(aq)

Therefore

Molar mass of NaOH =39.997 g/mol

Molar mass of Mg =24.305 g/mol

Thus,the conversion factors

g NaOH(aq)= mol NaOH(aq) = g Mg = mol Mg

Thus the amount of sodium hydroxide required

=  88.4 mg of  Mg x x x x...

You might be interested in
How did life begin? need asap
stealth61 [152]
Birds and bees. Adam and Eve
4 0
3 years ago
Read 2 more answers
A compound is broken down by chemical means during
alexandr1967 [171]

Answer : Option 3) Electrolysis.


Explanation : In the process of electrolysis, decomposition of the chemical is done by passing the electric current from the liquid or the solution containing ions in it. This is the process where compound is broken into ions namely, cations and anions.


Rest all options does not involves chemical decomposition of the compound.


Chromatography is a technique where rates of solute and solvent are compared in a medium where the solute components move at different rates and the separation is obtained.


Distillation simply purifies the liquid or solution by heating or cooling process.


Filtration just involves removal of impurities by using a more porous material device to get purified compound.

6 0
3 years ago
Read 2 more answers
24.08 x 10^23 atoms of Boron (B) is equal to how many moles of Boron?
padilas [110]
1 mole ----------- 6.02 x 10²³ atoms
? mole ---------- 24.08 x 10²³ atoms

moles B = ( 24.08 x 10²³) x 1 / 6.02 x 10²³

moles B = 24.08 x 10²³ / 6.02 x 10²³

= 4 moles

Answer B

hope this helps!
5 0
3 years ago
Read 2 more answers
Mg+2N=??<br>complete and balance it​
shtirl [24]

Answer:

mg3n2

Explanation:

3 0
4 years ago
Read 2 more answers
PLS HURYYY ILL GIVE BRAINLIEST
ad-work [718]

The volume increases when the balloon temperature increases.

<u>Explanation:</u>

-10 F is converted into Kelvin as 249 K.

0°C is nothing but 0+ 273 = 273 K

And the room temperature is 25°C which is converted into Kelvin as 273 + 25 = 298 K.

249 K is below room temperature.

As per the Charles' law volume and temperature are directly proportional to each other, when the pressure of the gas remains constant.

V ∝ T

As the balloon temperature increases, the volume also increases.

5 0
3 years ago
Other questions:
  • A. Is straining cooked pasta from water a physical or chemical separation?
    12·1 answer
  • To what temperature must a balloon, initially at 25°c and 2.00 l, be heated in order to have a volume of 6.00 l?
    6·2 answers
  • The angular momentum quantum number for the outermost electrons in a phosphorus atom in the ground state is __________.
    8·1 answer
  • calculate how many milliliters of 0.142 M NaOH are needed to completely neutralize 21.4 mL of 0.294 M H2C4H4O6.
    12·1 answer
  • What pressure is required to reduce 57 mL of
    15·1 answer
  • Calculate the number of atoms in 112 g of iron.​
    12·1 answer
  • Why might having mud in an ecosystem be important?
    12·1 answer
  • Which of the following would be considered a compound?<br> He<br> CI<br> NaCl<br> B
    10·1 answer
  • How many grams of mgcl2 are contained in 500 grams of a 1.0% solution
    15·1 answer
  • Indicate the number of significant figures in the following measured numbers:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!