Answer:
The number of oxygen atoms on the reactant side of the equation is 26.
Step-by-step explanation:
The equation is:
2K₃PO₄(aq) + 3Pb(NO₃)₂(aq) → 6KNO₃(aq) + Pb₃(PO₄)₂(s)
We can see that the reaction is balanced, that is to say, the number of atoms of the reactants is equal to the number of atoms of the products.
Now, we can count the number of oxygen atoms on the reactant side by multiplying the coefficients of K₃PO₄ and Pb(NO₃)₂ by the number of oxygen atoms as follows:
[tex] O_{r} = 2*4 + 3*(3*2) = 26 [/tex]
This is equal to the number of oxygen atoms of the products side:
[tex] O_{p} = 6*3 + 1*(4*2) = 26 [/tex]
Therefore, the number of oxygen atoms on the reactant side of the equation is 26.
I hope it helps you!
6
6
4
1 5
-8
If A = 7
-4
and B = | 9
-5 -8
find 3A + 9B.
Answer:
456yup 89i28993728128828282 6r3235
664r5790
what is a formula for the nth term of the given sequence?
12,6,3...
Given:
The sequence is:
12, 6, 3, ...
To find:
The formula for the nth term of the given sequence.
Solution:
We have,
12, 6, 3, ...
Here, first term is 12.
Clearly, [tex]\dfrac{6}{12}=\dfrac{3}{6}[/tex]. Since the given sequence has a common ratio [tex]r=dfrac{1}{2}[/tex], therefore it is a geometric sequence.
The formula for the nth term of the given sequence is:
[tex]a_n=ar^{n-1}[/tex]
Where, a is the first term and r is the common ratio.
[tex]a_n=12\left(\dfrac{1}{2}\right)^{n-1}[/tex]
Therefore, the formula for the nth term of the given sequence is [tex]a_n=12\left(\dfrac{1}{2}\right)^{n-1}[/tex].
Answer:
Step-by-step explanation:
There is 1/4 of a birthday cake left over. If 4 friends share it equally, what fraction of the cake will each friend receive? ( test please hurry!)
Answer:
The awnser is 1/16!!!!!!!!!!!!!
Which expression is equivalent to sec^2x
The trig function sec^2 x can also be expressed as 1 - csc^2 x. Both mean the same thing.
Simplify the expression below! The picture is down below!
Answer:
Its C
Step-by-step explanation:
The atmospheric pressure p on a balloon or an aircraft decreases with increasing height. This pressure, measured in milimeters of mercury, is related to the heighth (in kilometers) above sea level by the formula p = 760 -0.145
(a) Find the height of an aircraft if the atmospheric pressure is 246 millimeters of mercury
Answer:
[tex]h = 3544.83km[/tex]
Step-by-step explanation:
Given
[tex]P= 760 - 0.145h[/tex]
Required
Find h when P = 246
Substitute 246 for P
[tex]246= 760 - 0.145h[/tex]
Collect like terms
[tex]246- 760 = - 0.145h[/tex]
[tex]-514= - 0.145h[/tex]
Make h the subject
[tex]h = \frac{-514}{-0.145}[/tex]
[tex]h = 3544.83km[/tex]
Natalia can serve 120 volleyballs in 8 minutes and 330 volleyballs in 22 minutes. How many volleyballs can Natalia serve per minute if she is serving at a constant rate?
Answer:
15
Step-by-step explanation:
120+330=450
8+22=30
per minute->450÷30=15
can someone help meeeeeeeee
Answer: yw
1 4/5
Step-by-step explanation:
PLEASE HEEEEEELP,WILL GIVE BRAINLIEST
Also can you explain how you got your answer
Answer:
i think its 15,6,7,45
Answer:
Down Below :)
Step-by-step explanation:
15, 6, 7, 45
Multiply 5 by 1. You should get 5. Multiply/Divide. Top to Bottom is Multiplication, meanwhile Bottom to top is Division. Hope this helped!
Which whole number is equivalent to 12/3 ?
Answer:
4
Step-by-step explanation:
12 divided by 3 is 4. It's that simple!
I don’t know I think u times both of them 40 and 36 then divide by 4 then times by 2 i don’t know
What is the question?
What is the solution to this equation?
2x + x - 11 + 3 - 7x = 15
O -
A. x=-1
O B. - 13
O cx
O D. - 23
C. x=23
Answer:
Step-by-step explanation:
2x + x - 11 + 3 - 7x = 15
-4x = 23
x = -23/4
A necklace and earrings cost $144. Six necklaces and five pairs of earrings cost $825
Step-by-step explanation:
let necklace : x
let earrings : y
x+y=144 -1st eqn
6x+5y=825 -2nd eqn
y=144-X -3rd eqn
substitute eqn into 2nd eqn
6x+5(144-x)= 825
6x +720-5X =825 (expanded)
X = 825-720
X =105
substitute "X=105" into 1st eqn
(105)+y=144
y= 144-105
y=39
1 necklace = 105$
1 pair of earrings = 39$
(to check back: substitute the value into the original eqn)
a storage jug was 4/5 full of water when did get indicated 72 what was the full capacity of the storage jug
Answer:
90. ( was the full capacity of jug)
to solve this
firstly let the full capacity of jug
be. x
so,
4/5*x = 72
x = 72*5/4
x = 90
hope it helps
Trey has plastic cubes stored in a box that measures 4 ft long,
,22
ft wide, and 2 ft tall.
The edge length of each plastic cube is
1
1
2
ft.
How many plastic cubes can fit into the box?
20 plastic cubes
45 plastic cubes
125 plastic cubes
160 plastic cubes
Answer:
160 Cubes :)
Step-by-step explanation:
Find the value of x in the following figure
Please help I’m going to fail
Answer:
d
Step-by-step explanation:
Yuk noticed that out of 24 students entering the building at Willowville Elementary School this morning, 8 of them were carrying a lunch box. If these students are representative of the entire school, how many of the Willowville's 84 students would you expect to have brought a lunch box?
Answer:
the students that brought a lunch box is 28
Step-by-step explanation:
The computation of the students that brought a lunch box is shown below:
= Entire school students × students that carry a lunch box ÷ entering students
= 84 students × 8 ÷ 24 students
= 28 students
Hence, the students that brought a lunch box is 28
An octagonal prism has two octagonal faces.
True or false?
Answer:
true it has six sides and two faces
PLEASEEEE HELP ON ANY QUESTION
I WILL GIVE U THE REALLY GOOD REVIEW
Answer:
C. 3 to 18, 5 to 30 is equal
Step-by-step explanation:
Pls help me pls i will mark brainliest
Answer:
The line cannot be extended to any point since we are trying to graph a zero that is equivalent to absolutely nothing
Step-by-step explanation:
choose as brainliest
Given the following prices and unit conversions, rank the brands from lowest to highest unit price.
Brand A: $1.48 for 2.5 pounds
Brand B: $1.30 for 907.18 grams; 1 pound is approximately 453.59 grams
Brand C: $1.55 for 50 ounces; 1 pound is equal to 16 ounces
a.
Brand A, Brand B, Brand C
b.
Brand A, Brand C, Brand B
c.
Brand B, Brand A, Brand C
d.
Brand C, Brand A, Brand B
Answer:
d.
Brand C, Brand A, Brand B
Step-by-step explanation:
To find the unit price, we divide the price by the number of pounds.
Brand A: $1.48 for 2.5 pounds
Unit price of:
[tex]\frac{1.48}{2.5} = 0.592[/tex]
Brand B: $1.30 for 907.18 grams; 1 pound is approximately 453.59 grams
907.18/453.59 = 2 pounds
Unit price of:
[tex]\frac{1.3}{2} = 0.65[/tex]
Brand C: $1.55 for 50 ounces; 1 pound is equal to 16 ounces
50/16 = 3.125 pounds
Unit price of:
[tex]\frac{1.55}{3.125} = 0.496[/tex]
From lowest to highest unit price:
C, A and B, so option d.
Answer:
D
Step-by-step explanation:
Unit prices are ratios, so you can add the two prices together and divide by the smaller unit price to get a usable number.
what is the answer of this:
689 × 6156 ÷ 18% of 684 = 28 × 250 ÷ 8 + ? + 4300
A)27295
B)29275
C)29527
D)29725
E)None of these
Answer:
1606588.92
Step-by-step explanation:
Pls pls help me I will mark you brainest
y values: 3,4,5,6
x values: 5,10,15,20
Step-by-step explanation:
I used a graphing calculator but y is increasing by one and x increases by 5 each time
Answer:
See below.
Step-by-step explanation:
A's number is x. B's number is y.
x = 5y - 10
First row: What is x when y= 3?
x = 5y - 10 = 5*3 - 10 = 15 - 10 = 5; x = 5
Second row: What is x when y = 4?
x = 5y - 10 = 5*4 - 10 = 20 - 10 = 10; x = 10
Third row: What is y when x = 15?
x = 5y - 10
Add 10 both sides x + 10 = 5y - 10 +10
x + 10 = 5y
But we're told x = 15, so 15 + 10 = 5y
25 = 5y
Divide both sides by 5 25/5 = 5y/5
5 = y y = 5
Fourth row: What is x when y = 6?
x = 5y - 10 = 5*6 - 10 = 30 - 10 = 20; x = 20
PLEASE HELP ITS GEOMETRY ILL GIVE BRAINLIEST
The height y (in feet) of a ball thrown by a child is
Y=-1/12x^2+2x+3
where x is the horizontal distance in feet from the point at which the ball is thrown.
(a) How high is the ball when it leaves the child's hand?
feet
(b) What is the maximum height of the ball?
feet
(c) How far from the child does the ball strike the ground?
feet
Answer:
Step-by-step explanation:
Find the area of the circle. Use 3.14 for .
20 yd
Answer:
314 yd²
Step-by-step explanation:
A = πr²
Use the formula.
A = π(10)²
Substitute. Use 10 for r.
A ≈ 3.14 × 10²
Substitute. Use 3.14 for π.
A ≈ 3.14 × 100 Evaluate the power.
A ≈ 314 Multiply.
The area of the circle is about 314 yd².
Reflection over y=1
Help please
Answer:
reflect over what axis y or x?
Two students are reading a novel. Ashley reads 10 pages per day. Carly reads 8 pages per day, but she starts
early and is already on page 40.
d=days
p=pages
Ashley: p=10d
Carly: p=8d+40
On day ____, both girls should be on page ____.
Answer:
On day 20, they should both be on page 200
Step-by-step explanation:
I set the 2 equations up:
10d=8d+40 and then subtracted 8d from both sides
2d=40 and then divided both sides by 2
d=20
I then took 20 and multiplied it by 10 for Ashley (200) and then multiplied it by 8 for Carly (160) and added 40 (200)
Hope this helps!
What would measure a be?
Answer:
a = 40 degrees
Step-by-step explanation:
the inscribed angle of 200 degree arc is 100 degrees.
the sum of all the interior angles of a triangle is 180 degrees so:
angle a = 180 - 100 - 40 = 40 degrees