Molar mass of H_20
[tex]\\ \sf\longmapsto 2(1u)+16u[/tex]
[tex]\\ \sf\longmapsto 16u+2u[/tex]
[tex]\\ \sf\longmapsto 18g/mol[/tex]
Now
[tex]\boxed{\sf No\;of\:moles=\dfrac{Given\:Mass}{Molar\:Mass}}[/tex]
[tex]\\ \sf\longmapsto No\:of\;moles=\dfrac{0.0018}{18}=0.0001mol[/tex]
Now
[tex]\boxed{\sf No\;of\;molecules=No\:of\;moles\times Avagadro\:No}[/tex]
[tex]\\ \sf\longmapsto 0.0001\times 6.023\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 0.0000166\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 1.6\times 10^{18}molecules[/tex]
QUESTION 2:
The perimeter of a square P (measured in centimeters) is expanding in size at a constant rate of change of
4 centimeters per centimer with respect to the square's side length s (measured in centimeters).
a) If the length of the side of the square changes from
1. Oto 1.5 centimeters, how does the square's perimeter P change?
2. 3 to 8 centimeters, how does the square's perimeter P change?
b) Express the change in the square's perimeter p in terms of the change in the square's side length s.
AP=
Write a formula and construct a graph that represents the perimeter of the square P (in centimeters)
in terms of the square's side lengths (in centimeters).
x
d) Illustrate the solution to 8 - 4.s on the graph below and describe what this solution represents.
e) P-4.s represents the square's perimeter in terms of the square's side length (in centimeters).
write a formula that represents the perimeter's side lengths in terms of the square's perimeter P.
f) How is the formula you determined in part (e) related to the formula P=4.s?
We know that for a square of side length s, the perimeter is given by:
P(s) = 4*s
a) If initially we have s = 1cm, then the initial perimeter is:
P(1cm) = 4*1cm = 4cm
if now s changes to 1.5cm, the new perimeter will be:
p(1.5cm) = 4*1.5cm = 6cm
So the side length increased 0.5cm, and the perimeter increased 4 times that, 2cm.
b) We can define the change in side length as Δs, then if the initial side length is s, the new side length will be written as:
s + Δs
using this in the perimeter equation we get:
P(s + Δs) = 4*(s + Δs) = 4*s + 4*Δs = P(s) + ΔP
We can see that ΔP = 4*Δs
c) We already know the formula, it is P(s) = 4*s, the graph can be seen below.
d) We need to solve 8 = 4*s
To get this, we need to isolate s.
s = 8/4 = 2
s = 2
This means that if the perimeter is 8cm, then the side length must be 2cm
e) P = 4*s
is the perimeter in terms of the side length, we want to get the side length in terms of the perimeter, we just need to divide both sides by 4:
s = P/4
f) The formula we got in (e) is the formula P = 4*s divided on both sides by 4.
That is the relation between the two formulas.
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Evaluate the formula: x−2y=5 for when x=−3
Step-by-step explanation:
so, just use x = -3 in the equation.
-3 - 2y = 5
-2y = 8
y = -8/2 = -4
that was the whole thing.
Answer:
x-2y=5 x-3
×=2y-5 =x-3
x=3y=x-3
The product of a number and 3 is 5 less than the quotient of a number and 2.
9514 1404 393
Answer:
-2
Step-by-step explanation:
Let the number be represented by x.
3x = (x/2) -5
Multiplying by 2 gives ...
6x = x -10
5x = -10 . . . . . . subtract x
x = -2 . . . . . . . . divide by 5
The number is -2.
What is the answer
Answer ASAP
Step-by-step explanation:
-8.0-(-0.4+0.6)÷2
= -0.8-(0.2)÷2
= -0.8 -0.2 ÷2
= -0.9
use Bodmas method
Which equation corresponds to the following word problem?
Cory spends $6.50 on snacks at a gas station. He also buys gas, which costs $2.78 per gallon. If he spends a total of $24.00 at the gas station, how many
gallons of gas did he buy? Let g equal the number of gallons of gas.
(1 point)
O 6.509 +2.78 = 24.00
O 2.789 -6.50 = 24.00
O 6.50g - 2.78 = 24.00
2.789 +6.50 = 24.00
Answer:
Cory bought 6.30 gallons of gas at the gas station.
Step-by-step explanation:
total amount = cost of snacks + amount spent on gas
[tex]$\$ 24.00=\$ 6.50+\$ 2.78 \mathrm{~g}$[/tex]
[tex]$\$ 2.78 \mathrm{~g}=\$ 24.00-\$ 6.50$[/tex]
[tex]$\$ 2.78 \mathrm{~g}=\$ 17.50$[/tex]
[tex]$g=\frac{\$ 17.50}{\$ 2.78}$[/tex]
[tex]$g=6.30$[/tex]
Learn more about gallon refer:
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Please find attached photograph for your answer.
A total of 600 tickets were sold for the school play. They were either adult tickets or student tickets. There were 50 more student tickets sold than adult tickets. How many adult tickets were sold?
Answer:
275
Step-by-step explanation:
x + x + 50 = 600
2x = 550
x = 275
Use the properties of exponents to simplify the expression (16a 12).
O A) 28
B)
640 18
C)
1
24a13
OD) 64218
Answer:
D
Step-by-step explanation:
The solution is in the attached file
factorization
x2+2xy+y2-9
[tex]\\ \sf\longmapsto x^2+2xy+y^2-9[/tex]
[tex]\boxed{\sf (a+b)^2=a^2+b^2+2ab}[/tex]
[tex]\\ \sf\longmapsto (x+y)^2-9[/tex]
[tex]\\ \sf\longmapsto (x+y)^2-3^2[/tex]
A new car worth $28,000 is depreciating in value by $2000 per year. Write a formula that models the car's value, y, in dollars, after x years.
Answer: 28,000-2,000x= y
Step-by-step explanation: 28,000 is the starting cost. You would have to then multiply 2,000 by the amount of years it depreciates you find the total amount of value lost during the depreciation period. Once the total depreciation is determined you would subtract the starting cost from the depreciation amount. Determining Y, the value of the car after a certain amount of years.
Given that a new car worth $28,000 is depreciating in value by $2000 per year. The linear equation that models the car's value, y, in dollars, after x years : y = 28000 - 2000x.
What is linear equation?A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation.
Present car's value = y dollars
Number of years passed = x years
Linear equation that models the car's value =
y = 28000 - 2000x
($2000 depreciates every year. So the current value of the car is original price minus the $2000 subtracted every year i.e., x times $2000)
Learn more about linear equation here
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#SPJ2
Incorrect
Your answer Is Incorrect.
In the figure below, O is between M and P, and N is the midpoint of MO. If NO=2 and NP=6, find MP.
M
N
P
MP =
Answer:
m is the right answer
Step-by-step explanation:
no step hope yu mark me as brainliest
one question to get 20 points
convert 4 5/7 a mixed number to imper fraction
Step-by-step explanation:
[tex]4 \frac{5}{7} [/tex]
[tex] \sf \: \dfrac{4 \times 7 + 5}{7} [/tex]
[tex] \sf \: \dfrac{28 + 5}{7} [/tex]
[tex] \dfrac{33}{7} [/tex]
Translate the given phrase into an algebraic expression and simplify if possible: the difference of -10 and the product of p
and q.
Algebraic expression for statement : the difference of -10 and the product of p is
[tex]-10-pq[/tex]
Given :
the difference of -10 and the product of p and q.
We need to translate the given statement into expression
Product means multiplication
Product of p and q is pq
Difference means the subtraction
Difference of -10 and pq can be written as
[tex]-10-pq[/tex]
Algebraic expression for statement : the difference of -10 and the product of p is
[tex]-10-pq[/tex]
Learn more : brainly.com/question/18792674
Please help me!!!!!!
Answer:
y = -[tex]\frac{7}{4}[/tex]x + 14
Step-by-step explanation:
if we transpose the correct answer will be y = -[tex]\frac{7}{4}[/tex]x + 14
plz help with this!!!
Answer:
an exact location in space.
Step-by-step explanation:
P.S. please take a better picture because there is a reflection from the light and it makes it hard to read
Help me with this please :'-)
hiii how are you feeling today
Bob has 32 chickens on his farm. On average each chicken lays 11 eggs
Answer:
352 is the answer
Step-by-step explanation:
32×11
= 352
Luisa was studying weather
Answer:
lusia was studing weather doesnnot she
Once again, this is gonna be a long day. Chose each set the number below belongs to (select al that apply)
5/6
real
irrational
rational
integer
whole
natural
9514 1404 393
Answer:
real, rational
Step-by-step explanation:
The ratio of two mutually prime natural numbers is not ...
irrational, integer, whole, natural
The ratio 5/6 is ...
real, rational
Mrs. Haley baked apple pies for her family. The boys ate 9/10 of a pie and the girls ate 2/5 of a pie. How much more pie did the boys eat than the girls?
Answer: The boys ate half a pie more than the girls did (5/10 more).
Step-by-step explanation:
2/5 = 4/10
The difference between 9/10 and 4/10 is 5/10, or one half, so that's your answer.
60 is 1/100 of what?
Answer:
60% or 0.6 as a decimal
9.
Match the graph of the function with the function rule.
A. y = 1 • 4x
B. y = 2 • 4x
C. y = 3 • 10x
D. y = 10 • 4x
Answer:
D. y = 10 • 4x
Step-by-step explanation:
Answer: As seen from the graph, the y intercept is (0,0.5)
plugging this value in each equation:
y=1*4^x
plugging x as 0 and y as 0.5
lhs≠rhs
plugging x as 0 and y as 0.5
lhs = rhs
y= 1/2 x 4x
..............................................................................................................................................................................................................................................................................................
Answer:
D) y= 10*4^x
Step-by-step explanation:
Replace each function with x = 0
A)
B)
C)
D)
If you check the graph with x = 0, the value of y is between 8 and 12 so the only probably answer acoording to the alternatives is D) which gives y = 10 when x = 0
Can someone help me (Geometry)
Step-by-step explanation:
I think these is your correct answer .
Help with this math questions. 30 points °^°
express 8% as a decimal fraction
Hello :D
The answer is 0.08
I hope this helps :)
Que procedimiento tendrías que seguir para determinar el tamaño de los escalones
El tamaño del paso se puede determinar mediante progresión aritmética.
La secuencia aritmética implica una serie de números enumerados de manera que los números sigan un patrón específico y definido.Para determinar el tamaño del paso, usamos lógica aritmética de prorrateo.
Del formulario de progresión aritmética, donde:
[tex] a_{n} \: = a \: + \: (n - 1)d[/tex]
n = número de términos (número de pasos) = 9
d = diferencia común (tamaño de los pasos)
[tex] a_{n}[/tex]
Valor del enésimo término = 2
a = primer término = 1
Usando los parámetros, podemos obtener el valor de d que es el tamaño de cada paso.
Ingresando los valores en la fórmula:
2 = 1 + (9 - 1) d
2 = 1 + 8d
2 - 1 = 8d
1 = 8d
d = 1/8
d = 0,125
Por tanto, el tamaño del paso es de 0,125 metros.
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0ne elven and ninty ten thousandths. How would you write this
Answer:
one elven? do you mean eleven? if so, the answer is 11.00900 hope this helps
Step-by-step explanation:
Answer:
11.091000
Step-by-step explanation:
Is 4 – 2n = 5-1 +1 a one solution or a no solution or is it a real number
Step-by-step explanation:
4-2n=5-1+1
+2n. +2n
4=5-1+1+2n
4=5+2n
- 5. -5
-1=2n
-0.5=n
Answer: One solution.
n=-1/2
Step-by-step explanation: 4−2n=5−1+1 4+−2n=5+−1+1 −2n+4=(5+−1+1) −2n+4-4=5-4 −2n/-2=1/-2 n=-1/2
PLS HELP i will mark brainliest
Give an example of the product of a rational number and an irrational number and explain whether the answer would result in a rational or irrational number. MATH
Answer:
Step-by-step explanation:
Please anyone help me _ Logarithm Questions
Answer:
please mark me as brianlist
Step-by-step explanation:
a. log_a 64 = log_a 4³ = 3 log_a 4
= 3 (1.585) = 4.755
b. log_a 1/16 = log_a 4`² = -2 log_a 4
= -2(1.585) = -3.17
c. log_a 36 = log_a 4×9 = log_a 4 + log_a 9
= 1.585 + log_a 9
