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
Agata [3.3K]
3 years ago
9

muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware stores as a solution that is 30%(

w/w) HCL. What mass of this solution contains 7.5g of HCL?,
Chemistry
1 answer:
SSSSS [86.1K]3 years ago
5 0
We have 30% (w/w) HCl this means : 
               100 g solution contains 30 g HCl
               ?? g solution contains 7.5 g HCl
By cross multiplication:
Mass of solution = \frac{100 x 7.5 }{30} = 25 g solution
You might be interested in
I have no idea on how to do this here is the question (For the following pairs of atoms, show how they transfer valence electron
Maru [420]

Answer:

uhh

Explanation:

i hope you find this answer

3 0
3 years ago
Determine the number of 3s electrons in Na .
Scorpion4ik [409]

Answer:

Explanation:The atomic number of sodium is 11. That is, the number of electrons in sodium is 11. Therefore, a sodium atom will have two electrons in the first shell, eight in the 2nd orbit, and an electron in the 3rd shell.

3 0
1 year ago
A number should be rounded up if
Vedmedyk [2.9K]

Answer:

C.) The number after it is between 5 and 9

Explanation:

If the digit to the right is less than five, you must leave the digit you want to round to as it is.

But, if the digit to the right is greater than or equal to five, you must increase the value of the digit you're rounding to by one. And any remaining digits before the decimal point become zeros, and any that are after the decimal point are dropped.

Hope this helps you out! : )

6 0
3 years ago
A kayak travels in a lake at an average speed of 35 m/min. If the perimeter of the lake
DanielleElmas [232]

Answer: 4 hours

Explanation:

It takes the kayak 1 minute to travel 35 meters.

Divide the total (8400m) by the amount of meters per minute (35m)

\frac{8400m}{35m} =240minutes

Now convert into hours. (Remember that 1h has 60min)

240min(\frac{1h}{60min})=4h

6 0
3 years ago
If 100 ml of a 0.5 M HCI Solution is diluted with water to 1000ml, what is the new concetration?
Vesna [10]

Answer:

0.05\ \text{M HCl}

Explanation:

V_1 = Initial volume = 100 mL

V_2 = Final volume = 1000 mL

M_1 = Initial concentration = 0.5 M

M_2 = Final concentration

We have the relation

\dfrac{M_1}{M_2}=\dfrac{V_2}{V_1}\\\Rightarrow M_2=M_1\dfrac{V_1}{V_2}\\\Rightarrow M_2=0.5\times \dfrac{100}{1000}\\\Rightarrow M_2=0.05\ \text{M HCl}

The new concentration is 0.05\ \text{M HCl}.

3 0
3 years ago
Other questions:
  • Given the reaction:
    9·2 answers
  • This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generati
    15·1 answer
  • Which of the following would a chemist be most likely to study? A. what happens when a moving car comes to a stop B. what happen
    14·1 answer
  • What do the presence of fish and a wide diversity of invertebrates in a river indicate?
    8·1 answer
  • Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly ident
    7·2 answers
  • PLS HELPPPPP
    9·1 answer
  • What are the tiny green structures that plants use to make their own food?
    13·2 answers
  • 1. Calcium chloride is a salt that is added to roads and sidewalks
    8·1 answer
  • A __________ compound is a cyclic compound in which one or more of the ring atoms is an atom other than carbon. g
    9·1 answer
  • How can you get parents to accept a long distance relationship?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!