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
nikdorinn [45]
3 years ago
9

Balancing chemical equations

Mathematics
1 answer:
sashaice [31]3 years ago
7 0
. ...
Example 2. Zn + HCl ---> ZnCl2 + H2 ...
Example 3. Ca(OH)2 + H3PO4 ---> Ca3(PO4)2 + H2O. ...
Example 4. FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl. ...
Example 5. S8 + F2 ---> SF6 ...
Example 6. C2H6 + O2 ---> CO2 + H2O. ...
Example 7. Al2(CO3)3 + H3PO4 ---> AlPO4 + CO2 + H2O. Summary
To be useful, chemical equations must always be balanced. Balanced chemical equations have the same number and type of each atom on both sides of the equation.
The coefficients in a balanced equation must be the simplest whole number ratio. Mass is always conserved in chemical reactions. mber of atoms of each element in reactants is not equal to the number of atoms of each element present in product, then the chemical equation is called unbalanced chemical equation. An equation is balanced when the same number of each element is represented on the reactant and product sides. Equations must be balanced to accurately reflect the law of conservation of matter.

You might be interested in
To find the slope, Jackie makes right triangle P by using the graph of the line as the hypotenuse of the triangle as shown in th
miv72 [106K]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
There are five nickels, five dimes and five quarters in your pocket. You randomly pick three coins and place them on the counter
Goshia [24]

Answer:

The question is incomplete, this is the complete question.;

There are five nickels, five dimes and five quarters in your pocket. You randomly pick three coins and place them on the counter the first coin is a nickel, the second is a dime and the third is a quarter.find the probability of this occurring.

The answer to the question is;

the probability of this occurring is 1/27

Step-by-step explanation:

Let n(N) =5 ( the number of nickels)

n(D) =5 ( the number of dimes) and

n(Q) = 5 ( the number of quarters)

P(N)= 5/15=1/3 (prob of picking a nickel)

P(D) =5/15=1/3 (prob of picking a dime)

P(Q) = 5/15= 1/3 (prob of picking a quatre)

The probability of picking the three= P(N)×P(D)×P(Q)

= 1/3×1/3×1/3

= 1/27

7 0
3 years ago
I thought of a two-digit number. The unit digit of my number is a prime number, and the tens digit is four times as big as the u
denis-greek [22]

let the number is 10x + 3.

then sum of its digits = x + 3.

from given condition, we have

x+3 = (1/7)* (10x + 3)

=> 7x + 21 = 10x + 3

=> 3x = 18

=> x = 6

therefore the number is 63.
4 0
3 years ago
A cylinder has a volume of 320 pi cu. in. and a height of 5". Find the radius of the cylinder. ...?
Kruka [31]
The volume of a cylinder can be calculated by the product of the area of the base times the height of the shape. It is expressed as follows:

V = πr²h

We calculate as follows:

320π in³=  π (r²) (5 in)
64 in² = r²
r = 8 in

Hope this answers the question. Have a nice day.
4 0
2 years ago
Read 2 more answers
If f (x) = ( 3 - x)² . what is f (5)?​
natali 33 [55]

Answer:

4

Step-by-step explanation:

(3 - 5)^2

-2^2 = 4

5 0
3 years ago
Other questions:
  • 40 POINTS IF YOU GIVE ME THE FULL RIGHT ANSWERS
    6·2 answers
  • Explain how you know without computing whether the quotient of 1/2 divided by 6 is greater than or less than 1
    7·1 answer
  • Whats the answer for -3(r-4)>0
    15·1 answer
  • What is the sum of 2/5 and 2/4?
    5·2 answers
  • The range of the quedractic function is {y|y
    6·2 answers
  • The point plotted on the number line is What is the approximate value of x? 04 O 9 O 17 O 20​
    12·1 answer
  • Hurrrryyyyyy I neeedddd helppppp please
    13·1 answer
  • I need answer as quick
    12·2 answers
  • Tell whether the lines through the given points are parallel, perpendicular, or neither.
    8·1 answer
  • Alex‘s credit card balance is -$200 after a long she makes a payment of $50 towards her bill what integer represents
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!