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velikii [3]
3 years ago
9

Suppose you need to prepare 138.1 mL of a 0.190 M aqueous solution of NaCl. What mass, in grams, of NaCl do you need to use to m

ake the solution
Chemistry
1 answer:
Neko [114]3 years ago
5 0

Answer:

Explanation:

·  44 g NaCl Explanation: The problem provides you with the molarity and volume of the target

The answer is rounded to two sig figs, the number of sig figs you have for the molarity of the solution.

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1) What type of star covers all brightness and temperatures?
Mrrafil [7]

Answer:

The answer to the 2nd question is C.giants.

Explanation:

8 0
3 years ago
2 C2H2 + 5 O2<br> 2 H2O + 4 CO2 <br> what reaction type
Alexxx [7]

Answer:

Combustion reaction

General Formulas and Concepts:

<u>Chemistry</u>

  • Synthesis Reactions: A + B → AB
  • Decomposition Reactions: AB → A + B
  • Single-Replacement Reactions: A + BC → AB + C
  • Double-Replacement Reactions: AB + CD → AD + BC

Explanation:

<u>Step 1: Define</u>

2C₂H₂ + 5O₂ → 2H₂O + 4CO₂

<u>Step 2: Identify</u>

Any organic molecule reacting with oxygen to produce water and carbon dioxide is a combustion reaction.

We also see from the RxN that is is a double replacement reaction.

5 0
3 years ago
Read 2 more answers
2. After class, Claudia had a snack. Then, she drove home and settled down to relax, surrounded by candlelight. What types of co
kkurt [141]

Answer:

The types of combustion are;

1) Claudia eating snack is slow combustion

2) Claudia driving home involves explosive combustion

3) The lit candle is a form of rapid combustion

Explanation:

Combustion is the rapid exothermic chemical reaction between a fuel and an oxygen source to produce oxidized compounds formed from the elements in the compounds present in the fuel, which when combined together in a mixture are known as smoke

The types of combustion are;

1) Digestion of the snack is the slow combustion of glucose

2) Combustion in the engine of the car is a form of explosive combustion

3) The burning of the candle is a form of rapid combustion

8 0
3 years ago
PLEASE HELP FAST!! WILL MARK BRAINLIEST
Rashid [163]

Answer:

sorry i am proor sorry

Explanation:

..... .........

5 0
3 years ago
Consider this reaction: <br><br> Which is the acid in this reaction?
Svetlanka [38]
Depends on the acid and chemical your using..?
4 0
3 years ago
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