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
Crazy boy [7]
3 years ago
8

2. Dilute hydrochloric acid reacts with zinc to form zinc chloride and hydrogen.

Mathematics
1 answer:
DIA [1.3K]3 years ago
6 0

Step-by-step explanation:

Zn + 2HCl => ZnCl2 + H2

Moles of Zn = 13g / (65.38g/mol) = 0.198mol

Volume of HCl = 0.396mol / (0.25mol/dm³) = 1.58dm³.

Volume of H2 = 0.198mol * (22.4dm³/mol) = 4.43dm³.

You might be interested in
What is the probability of choosing a king from a deck of cards? Type your answer as a fraction.
Vikki [24]

Answer:

4/52 or 1/13

Step-by-step explanation:

there are only 4 kings; diamond, Heart, Spades and Clubs.

4 0
3 years ago
Read 2 more answers
Four plumbers estimated the length of the radius of a cylindrical pipe. The estimates made by
o-na [289]

Answer:

B. \frac{\sqrt{3}}{11}, \frac{\pi}{24}, \frac{3}{25},  \frac{9}{100}

Step-by-step explanation:

The question is not properly presented. See attachment for proper presentation of question

From the attachment, we have that:

W = \frac{3}{25}

X = \frac{\sqrt{3}}{11}

Y = \frac{9}{100}

Z = \frac{\pi}{24}

Required

Order from greatest to least

First, we need to simplify each of the given expression (in decimals)

W = \frac{3}{25}

W = 0.12

X = \frac{\sqrt{3}}{11}

Take square root of 3

X = \frac{1.73205080757}{11}

X = 0.15745916432

X = 0.16 --- approximated

Y = \frac{9}{100}

Y = 0.09

Z = \frac{\pi}{24}

Take π as 3.14

Z = \frac{3.14}{24}

Z = 0.13083333333

Z = 0.13  --- approximated

List out the results, we have:

W = 0.12    X = 0.16    Y = 0.09    Z = 0.13

Order from greatest to least, we have:

X = 0.16     Z = 0.13      W = 0.12       Y = 0.09

Hence, the order of arrangement is:

X = \frac{\sqrt{3}}{11}     Z = \frac{\pi}{24}      W = \frac{3}{25}      Y = \frac{9}{100}

i.e.

\frac{\sqrt{3}}{11}, \frac{\pi}{24}, \frac{3}{25},  \frac{9}{100}

6 0
3 years ago
(x-2) is a factor of x^2-3x^2+kx+14. The value of k is?​
BartSMP [9]

Answer:

k = 5

Step-by-step explanation:

I will assume that your polynomial is

x^2 - 3x^2 + kx + 14

If x - a is a factor of this polynomial, then a is a root.

Use synthetic division to divide (x - 2) into x^2 - 3x^2 + kx + 14:

 2      /      1     -3     k     14

                        2     -2    2k - 4

         -------------------------------------

               1        -1    (k - 2)   2k - 10

If 2 is a root (if x - 2 is a factor), then the remainder must be zero.

Setting 2k - 10 = to zero, we get k = 5.

The value of k is 5 and the polynomial is x^2 - 3x^2 + 5x + 14

6 0
3 years ago
I neeeeed help thankyou
Helen [10]

Answer:

what one

Step-by-step explanation:

if it is the left one it is -7(2x)+-7(7)+10x=-4x

7 0
3 years ago
I =125 r=6% t=1 what is p
vfiekz [6]
There is no P in here, you can't solve for P without a P, Or I just don't get the question.
4 0
3 years ago
Other questions:
  • Okay random but if you think Michael Jackson and Bruno Mars are good singers and dancers. Plz respond just curious???
    5·2 answers
  • A 32-m tall building casts a shadow. The distance from the top of the building to the tip of the shadow is 35 m. Find the length
    11·1 answer
  • Can someone help me<br> On this!!??
    14·1 answer
  • What number is 40% of 90
    10·1 answer
  • Answer the question below anything will help
    14·2 answers
  • Good luck Question 16 Which of the following is the graph whose equation is (x + 1)2 + (y - 6)2 = 9?​
    6·1 answer
  • How do you write 1/9 as a decimal?​
    12·2 answers
  • 1 + 1<br><br> I’m having real trouble with this one :(
    5·1 answer
  • Jake is 2 years younger than Alex. Alex is 1 year older than James. James is twice the age of Amy. When you add all their ages,
    9·2 answers
  • Please solve! thanks!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!