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
padilas [110]
3 years ago
6

PLEASE HELP!!!!!!!!!!!

Mathematics
1 answer:
Dima020 [189]3 years ago
4 0

Answer:

sorry i don't even know myself and the truth i suck at math

Step-by-step explanation:

You might be interested in
One container of Tums® costs 4.00 dollars. Each container has eighty 1.00 g tablets. Assume each Tums® is 40.0 percent CaCO₃ by
Anna007 [38]

Answer:

The total cost is 1.25 dollars.

Step-by-step explanation:      

The reaction between HCl and CaCO₃ is giving by:

2HCl(aq) + CaCO₃(s)   →   CaCl₂(aq) + CO₂(g) + H₂O(l) (1)

0.500L     M: 100.01g/mol        

0.400M

According to equation (1), 2 moles of HCl react with 1 mol of CaCO₃, so to neutralize HCl, we need the next amount of CaCO₃:

m CaCO_{3} = (\frac{1 \cdot mol HCl}{2}) \cdot M_{CaCO_{3}} = (\frac{0.500L \cdot 0.400 \frac {mol}{L}}{2}) \cdot 100.01 \frac{g}{mol} = 10.001 g      

The CaCO₃ mass of each tablet is:

m CaCO_{3} = 1 g_{tablet} \cdot \frac{40g CaCO_{3}}{100g_{tablet}} = 0.4g

Hence, the number of tablets that we need to neutralize the HCl is:

number_{tablets} = ( \frac{1 tablet}{0.4 g CaCO_{3}}) \cdot 10.001g CaCO_{3} = 25  

Finally, if every 80 tablets costs 4.00 dollars, 25 tablets will cost:

cost = (\frac {4 dollars}{80 tablets}) \cdot 25 tablets = 1.25 dollars

<u>So, the total cost to neutralize the HCl is 1.25 dollars.</u>

I hope it helps you!

7 0
3 years ago
Simplify. Solve as fast as possible.
Rom4ik [11]

Answer:

-5y

Step-by-step explanation:

\sqrt{y^2} = y if x > 0

-5\sqrt{y^2} = -5y

4 0
3 years ago
Solve x2 + 2x + 9 = 0. (2 points) x equals negative 2 plus or minus 4 I square root of 2 x equals negative 2 plus or minus 2 I s
vazorg [7]

Answer:

try the answer C

Step-by-step explanation:

4 0
3 years ago
What number is 20% of 40?
VladimirAG [237]

Answer:

It would be 8

Step-by-step explanation:

20% of 40 is 8

6 0
3 years ago
Read 2 more answers
I need help Finding the perimeter of a towel that measures 2 feet by 34 foot
valentinak56 [21]

Answer:

72 feet

Step-by-step explanation:

multiply 34 by 2 (because there is 2 sides), and multiply 2 by 2 (because there is 2 sides), and you'll get 68 and 4. add them together, and you'll get 72.

6 0
3 years ago
Other questions:
  • A check register is a good source of information for budget planning purposes. True False
    8·2 answers
  • 2/3 of 864 squarr feet
    10·1 answer
  • Whats the answer to a/-6&lt;1
    8·1 answer
  • Find the area of a segment formed by a chord 8" long in a circle with radius of 8".
    5·1 answer
  • Combine like terms: 46 - 3) + 2x + 8​
    11·1 answer
  • Which word correctly completes this sentence? The English teacher is more ______ than the Spanish teacher.
    15·1 answer
  • 9. Given the expression 8a + 160<br> (1 Point)<br> What is the GCF?
    15·1 answer
  • 60% of the 50 students in Jessie’s gym class are 12 years old. How many students in Jessie’s class are 12 years old?
    11·1 answer
  • Samantha is constructing a door frame with base 30 inches, height 84 inches, and diagonal 91 inches. A sketch of the door frame
    10·1 answer
  • if the sides if a square are increased by 3 m, the area becomes 64 m^2. Find the length if a side if the original square
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!