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
fgiga [73]
3 years ago
10

How many moles are in a sample of 3.01 x 10^18 formula units of sodium hydroxide (NaOH)?

Mathematics
1 answer:
Lunna [17]3 years ago
4 0

Step-by-step explanation:

We can use the formula to find the number of moles. As ,

:\implies n = No. of particles/ N_A

:\implies n = 3.01× 10¹⁸/6.022 × 10²³

:\implies n = 1/2 / 10⁵

<h3>Hence the number of particles is 1/2 / 10⁵ </h3>

You might be interested in
joe is in debt $250, but he's saving $30 each month. using the equation, y=30x-250, how long will it take joe to have $230?
Vsevolod [243]

Answer:

16

Step-by-step explanation:

so in this equation we have 2 variables, and we must figure out what those variables mean:

y: "y" is the total amount of money joe has after subtracting his debt from it

x: "x" is the # of months as the cost of each month(30) is placed just before this variable

as y is the total amount of money joe has we need to substitute it for 230 to figure out how long it took for joe to recieve that much money

230=30x-250

480=30x

x=16

it took joe 16 months to get $230

3 0
3 years ago
What is -21% as a decimal
AnnZ [28]

Answer:

− 0.21

Step-by-step explanation:

Convert to a fraction, then convert to a decimal by dividing the numerator by the denominator.

5 0
3 years ago
Read 2 more answers
2 trig ratios missing sides and angels
ivanzaharov [21]

Answer:

D

Step-by-step explanation:

Using the cosine ratio in the right triangle.

cos66° = \frac{adjacent}{hypotenuse} = \frac{13}{x} ( multiply both sides by x )

x × cos66° = 13 ( divide both sides by cos66° )

x = \frac{13}{cos66} ≈ 32.0 ( to the nearest tenth )

8 0
3 years ago
An entertainment firm offers several DJ choices and light shows that range in price based on the rental time period. The DJ's co
alexdok [17]
219+159≤x≤369+309
The answer can then be simplified to 
378≤x≤678
8 0
3 years ago
What is 4/9 + 7/18 in simplest form?
Lorico [155]
5/6 would be the answer.
8 0
3 years ago
Read 2 more answers
Other questions:
  • If 20 percent of 40 percent of a number is 10 greater than half the number, what is the number?
    8·2 answers
  • Make the following changes to the number 5.376:
    11·1 answer
  • The diagram shows the construction of the perpendicular bisector of AB.
    12·1 answer
  • Explain how you could find 3/8% of $800
    7·1 answer
  • Jimmy thought he had purchased 7 folders but he only purchased 6. What was his percent error?
    7·1 answer
  • Paula is shopping for a party.she finds a pack of 6 rolls of streamers for $4.50. What is the cost of one roll of streamers ?
    13·1 answer
  • We have 500 mice and want to determine how effective a given cure for a virus. 10 mice are taken from the group and injected wit
    13·1 answer
  • K4. The speed of a vehicle is 75 km hrl. Write the unit of the given speed as a fraction using a positive exponent​
    13·1 answer
  • A Cinema has 240 seats. 144 seats were sold
    13·1 answer
  • Select the correct answer.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!