150 mL of 0.25 mol/L magnesium chloride solution and 150 mL of 0.35 mol/L silver nitrate solution are mixed together. After reaction is completed; calculate the concentration of nitrate ions in solution. Assume that the total volume of the solution is 3.0 x 10^2 mL

Answer:

[tex]0.175\; \rm mol \cdot L^{-1}[/tex].

Explanation:

Magnesium chloride and silver nitrate reacts at a [tex]2:1[/tex] ratio:

[tex]\rm MgCl_2\, (aq) + 2\, AgNO_3\, (aq) \to Mg(NO_3)_2 \, (aq) + 2\, AgCl\, (s)[/tex].

In reality, the nitrate ion from silver nitrate did not take part in this reaction at all. Consider the ionic equation for this very reaction:

[tex]\begin{aligned}& \rm Mg^{2+} + 2\, Cl^{-} + 2\, Ag^{+} + 2\, {NO_3}^{-} \\&\to \rm Mg^{2+} + 2\, {NO_3}^{-} + 2\, AgCl\, (s)\end{aligned}[/tex].

The precipitate silver chloride [tex]\rm AgCl[/tex] is insoluble in water and barely ionizes. Hence, [tex]\rm AgCl\![/tex] isn't rewritten as ions.

Net ionic equation:

[tex]\begin{aligned}& \rm Ag^{+} + Cl^{-} \to AgCl\, (s)\end{aligned}[/tex].

Calculate the initial quantity of nitrate ions in the mixture.

[tex]\begin{aligned}n(\text{initial}) &= c(\text{initial}) \cdot V(\text{initial}) \\ &= 0.25\; \rm mol \cdot L^{-1} \times 0.150\; \rm L \\ &= 0.0375\; \rm mol \end{aligned}[/tex].

Since nitrate ions [tex]\rm {NO_3}^{-}[/tex] do not take part in any reaction in this mixture, the quantity of this ion would stay the same.

[tex]n(\text{final}) = n(\text{initial}) = 0.0375\; \rm mol[/tex].

However, the volume of the new solution is twice that of the original nitrate solution. Hence, the concentration of nitrate ions in the new solution would be [tex](1/2)[/tex] of the concentration in the original solution.

[tex]\begin{aligned} c(\text{final}) &= \frac{n(\text{final})}{V(\text{final})} \\ &= \frac{0.0375\; \rm mol}{0.300\; \rm L} = 0.175\; \rm mol \cdot L^{-1}\end{aligned}[/tex].

1.
How many moles of NaCl are in 1.5L of 0.25 M solution?

A Air at a temperature of 134°C and atmospheric pressure flows with a velocity of 7 m/s over


a smooth 5 m long and 1 m wide cast iron plate. Under steady-state conditions, the air-side


surface temperature of the plates is at 120°C. Under the described conditions, determine the


overall heat transfer rate through the plate.


B-If the flat plate in (A) is replaced with a cylinder with the same surface area (heat transfer


area) and the cylinder's length is the same as the width of the plate (1.0 m), what would be the


heat transfer rate for cross air flow over the outside surface of the cylinder?


C. If the flat plate in (A) is replaced with a sphere with the same surface area (heat transfer area),


what would be the heat transfer rate for cross air flow over the outside surface of the sphere?


D- Based on your results, discuss which surface configuration is more effective for heat

Chose any ONE state of matter and explain the space of the particles.
Use a drawing to help explain.

Answer the following question attached!!

grtdggddgdggrsggrgrgd

As atoms vibrate faster, the space between them decreases. True or false?

A 38-kilogram child roller skates on a circular track with a radius of 24 m. Her velocity is 6.0 m/s. What centripetal force does she experience?

580 N
0.16 N
57 N
0.38 N

What would happen if hydrogen chloride gas is bubbled through a solution of lead (II) nitrate? Explain​

if atomic mass of Mg atom is 24g,find the mass of 1 Mg atom​

Which transition could represent an atom that emits a photon with 10.2 eVeV of energy?

How many atoms are in 25.0 grams of carbon?

What type of material is half-life associated with?

Answer all questions please and be quick, it’s very URGENT

U will get BRAINLY

An unknown solution contains several chemical substances. By following a series of steps in a procedure, each of these substances can be isolated. Which of the following methods would be most appropriate for showing the steps needed to separate the substances?

A. Draw a diagram of apparatus used.
B. Create a flowchart of the various steps.
C. Build a model of the various atomic structures.
D. Construct a graph showing the times needed for each step.

Bill sets up an experiment to determine and predict the velocity of a marble at the end of a track. He uses an electronic balance to weigh the marble. He then places the marble at the top of the track and releases it. Artie uses the time it takes the marble to pass through a photogate at the bottom of the track to calculate the velocity of the marble. ill notes that his prediction is significantly higher than his calculated velocity. Which error explains this difference? A) Bill forgot to account for friction. B) Bill forgot to zero the balance and found a weight for the marble that was too low. C) Bill weighed the marble in a weighing dish and failed to account for the mass of the weighing dish. D) Bill didn't position the photogate correctly and got the time required for the top of the marble to pass through, rather than reach the middle.

Which of the following materials can conduct electricity?

Plastic pencil case
Rubber band
Steel necklace
Wood ruler

What makes the Earth go around the Sun?

How many atoms are present in a 0.600- mole sample of gold?

A car hits a bug with a force of 100N. With how much force does the bug hit the car?

(A). 10 N

(B). 100 N

(C). 1000 N

Which hypothesis is most supported by astronomers?


A- The universe is currently expanding and will continue to expand.

B- Stars could burn out, causing the universe to become dark and cold.

C- Gravity could pull galaxies back together, causing a reverse of the big bang.

D- Dark energy will pull the universe together to form a massive black hole.

HURRY!!

Question 13(Multiple Choice Worth 5 points)
(03.05 MC)

Liquid X has a pH of 7 and Liquid Y has a pH of 8.5. Which statement is true?

Liquid X is a base and Liquid Y is an acid.
Liquid X is an acid and Liquid Y is a base.
Liquid X is neutral and Liquid Y is a base.
Liquid X is an acid and Liquid Y is neutral.

Diazene, N2H2 (also known as diimine), is commonly used as a reagent for organic syntheses. Label each image with the type of
bond in diazene that it shows.

Essential Question: How is the scientific method used to answer questions?

NEED ANSWER ASAP ! WILL BRAINLIST !
• Cillian is a company that uses a particular kind of wood to manufacture its products. Suppose the economy is experiencing high demand for trees from which this wood is obtained.
• Which is a likely response to this rising demand?
A. New distribution systems will be used to improve delivery of the wood to Cillian.
B. The trees will be regulated to maintain the availability of the wood.
C. New processes will be developed to locate the trees more efficiently.
D. The wood will be used as quickly as possible.

[H+]=1×10−13 M pH=

what is this answeer

The equations ? It’s for a chemistry class, and he said we need to explain and write down the math problems?

Convert 23 grams of nitrogen dioxide into moles of nitrogen dioxide.

I NEED HELP!!OMG OMG OMG

This is due tomorrow please help!

Solutions which can conduct electricity must contain:
atoms
minerals
molecules
ions