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solniwko [45]
3 years ago
13

WILL GIVE 50 POINTS PLEASE HELP!!!!!

Chemistry
1 answer:
Brut [27]3 years ago
6 0

Answer:

b) The volume of stock solution used is less than 3 liters.

Explanation:

Given:

Concentration of stock solution of NaCl, M1 = 10 M

Concentration of diluted solution of NaCl, M2 = 1 M

Volume of diluted NaCl solution, V2 = 3 L

Let the volume of stock NaCl solution = V1

Formula:

Use the dilution relation:

M1V1 = M2V2

Based on the above equation:

V1 = \frac{M2V2}{M1} = \frac{1M*3L}{10M} = 0.3 L

Therefore, the volume of stock solution required is 0.3 L which is less than 3 L

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Darina [25.2K]

Answer:

C

Explanation:

4× CH2 = C4H8

7 0
3 years ago
Write 3 to 5 sentences about predicting the properties of acids and bases​
Nataly_w [17]

Answer:

cause of the properties of their aqueous solutions. Those properties are outlined below:

Aqueous solutions of acids are electrolytes, meaning that they conduct an electrical current. Some acids are strong electrolytes because they ionize completely in water, yielding a great many ions. Other acids are weak electrolytes that exist primarily in a non-ionized form when dissolved in water.

Acids have a sour taste. Lemons, vinegar, and sour candies all contain acids.

Acids change the color of certain acid-base indicators. Two common indicators are litmus and phenolphthalein. Blue litmus turns red in the presence of an acid, while phenolphthalein turns colorless.

Acids react with active metals to yield hydrogen gas. Recall that an activity series is a list of metals in descending order of reactivity. Metals that are above hydrogen in the activity series will replace the hydrogen from an acid in a single-replacement reaction, as shown below:

text{Zn}(s)+text{H}_2text{SO}_4(aq)rightarrow text{ZnSO}_4(aq)+text{H}_2(g)

Acids react with bases to produce a salt compound and water. When equal moles of an acid and a base are combined, the acid is neutralized by the base. The products of this reaction are an ionic compound, which is labeled as a salt, and water.

[10/31, 6:00 PM] Jana Taher: Bases have properties that mostly contrast with those of acids.

Aqueous solutions of bases are also electrolytes. Bases can be either strong or weak, just as acids can.

Bases often have a bitter taste and are found in foods less frequently than acids. Many bases, like soaps, are slippery to the touch.

Bases also change the color of indicators. Litmus turns blue in the presence of a base while phenolphthalein turns pink.

Bases do not react with metals in the way that acids do.

Bases react with acids to produce a salt and water.

Please note that tasting chemicals and touching them are NOT good lab practices and should be avoided in other words, don’t do this at home.

8 0
3 years ago
5.04 Discussion: Reaction-Rate Factors
saul85 [17]

Increasing the surface area of the reactant by pelletizing the calcium carbonate, and increasing the concentration of hydrochloric acid resulted in increase in the rate of reaction.

<h3>What is reaction rate?</h3>

Reaction rate refers to the rate at which reactant molecules are consumed or the rate at which product molecules are formed.

The factors that affect reaction rate include:

  • Temperature
  • Concentration
  • Surface area of reactants
  • Nature of reactants
  • Presence of catalysts

Given an experiment to determine effect of surface area of reactants  and concentration on reaction rate of dilute hydrochloric acid and calcium carbonate:

It was observed that increasing the surface area of the reactant by pelletizing the calcium carbonate and increasing the concentration of hydrochloric acid made the reaction proceed faster.

In conclusion, reaction rate increases with increase in surface area.

Learn more about factors affecting reaction rate at: brainly.com/question/14817541

#SPJ1

8 0
2 years ago
How many grams of sodium are needed to produce 12.5 g of sodium oxide
lutik1710 [3]
1. (b) I hope this helps!

7 0
3 years ago
Plants absorb water from the soil to live and grow. This is an example of of the biosphere, hydrosphere, and lithosphere.
aev [14]

This is an example of sphere interaction of the biosphere, hydrosphere, and lithosphere.

4 0
3 years ago
Read 2 more answers
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