Answer:
46.5
explanation
6.022*10^23 molecules=40g.
7.00*10^23=40*7.00*10^23/6.022*10^23 g =46.5 g
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
What is mole?The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
given number of atoms of NaOH= 7.00 x 10²² atoms
Substituting the values
mole=7.00 x 10²²÷ 6.022×10²³
mole =0.116 moles of NaOH
mass of NaOH= Molar mass of NaOH× moles of NaOH
= 40 × 0.116
= 4.65g
Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
To know more about mole, here:
brainly.com/question/15209553
#SPJ2
(a) Calculate 8% of £3.25.
Answer:
8÷100×3.25
=£0.26
hope it is helpful to you
Step-by-step explanation:
8÷100×3.25
=0.26
espero ter te ajudado
A pop quiz has 4 multiple choice problems, all with 3 possible answers (A, B, or C,). You need to get at least 4 correct to pass. If you are completely unprepared and have to guess on every question, what is the probability that you will pass the quiz?
Answer:
The probability is 1/4, for me if I need to guess all blankly.
But if I am unprepared but if I use my brain it can be 3/4
Sooo, hope it helps!!!
please help 15 pointssssss
Which one is it
Answer:
D
Step-by-step explanation:
x = 8
5×8=40
40-6=34
34+57+89=180
angles of a triangle is equal to 180 degrees
Hope this helps
Kind Regards
Farah Syed
Find the area of the parallelogram.
15 cm
8 cm
[ ? ] square centimeters
Enter
Answer:
[tex]A = 120 \ cm^2[/tex]
Step-by-step explanation:
The formula to find the area of a parallelogram is the following,
[tex]A=(base)*(height)[/tex]
Substitute in the given values and solve,
[tex]A=(15)*(8)\\\\A = 120[/tex]
What is the constant change for the table ?
Answer:
$9 per 1 item
Step-by-step explanation:
Answer:
$9 per 1 item
Step-by-step explanation:
On a multiple-choice test, a student has four possible choices for each question. The student receives 1 point for a correct answer and loses ¼ point for an incorrect answer. If the student has no idea of the correct answer for a particular question and merely guesses, what is the student's expected gain or loss on the question? Suppose you were using an
Answer:
1 / 16
Step-by-step explanation:
Number of options = 4
Number of correct answers = 1
Number points gained for a correct answer = 1
Number of points lost for an incorrect answer = 1/4 = 0.25
Probability of choosing a correct option = 1/4
Probability of choosing an incorrect option = 3/4
x ____ 1 ______ - 1/4
P(x) __ 1/4 ______ 3/4
Expected gain or loss :
E(x) = Σx*p(x)
E(x) = (1 * 1/4) + (-1/4 * 3/4)
E(x) = 1/4 - 3/16
E(x) = (4 - 3) / 16
E(x) = 1 /16
A gain of 1/16
In a film showing by the dramatic club, a ticket costs 50 pesos for members. What will be expression for non members if the ticket costs 5 pesos more than the members? Algebra.
Answer:
Expression represents this situation is 50+5 pesos.
Step-by-step explanation:
A ticket costs 50 pesos for a member of a club.
Non club member ticket cost is 5 pesos more than the member.
So, expression represents this is 50+5 pesos
Can anyone help me please
Answer:
noqijauaajajajajabbaababbaa
Which of the following is most likely the next step in the series?
000
O A.
B.
O c.
D.
Ivan has a sticker collection. 2/5 of his stickers are scratch-and-sniff stickers. 1/4 of his scratch-and-sniff stickers smell like bananas. What fraction of Ivan's sticker collection smells like bananas? *
Answer:
1 / 10
Step-by-step explanation:
From the question :
Fraction of scratch and sniff sticker from total stickers = 2/5
1/4 of scratch and sniff stickers smell like banana :
Fraction of total stickers that smell like banana :
(Fraction of scratch and sniff sticker from total stickers) * (scratch and sniff stickers smell like banana)
= (2/5) * (1/4)
= 2 /20
= 1/10
The value of -4 5/8 - x is positive. What are two possible values of x?
Answer:
-6, -7
Step-by-step explanation:
basically
-4 5/8 - x >0
so
x< -4 5/8
you just need 2 values less than -4 5/8
like -6 and -7
The possible values of x could be x = -20 or x = -10 that satisfy the inequality.
Given: -4 5/8 - x > 0
To find two possible values of x that make the expression -4 5/8 - x positive, set up an equation and solve for x.
First, let's convert -4 5/8 to an improper fraction.
The improper fraction equivalent of -4 5/8 is -37/8.
So, -37/8 - x > 0
To isolate x, move -37/8 to the other side of the inequality by adding it to both sides:
x < -37/8
Now, Two possible values of x could be:
x = -20 or x = -10
Both of these values are less than -37/8, so they satisfy the inequality and make the expression -4 5/8 - x positive.
Learn more about Inequality here:
https://brainly.com/question/20383699
#SPJ4
Please help me. No links are allowed. This is really urgent find the volume of the irregular figure.
two passenger train traveling in opposite directions meet and pass each other. Each train is 1/18 miles long and is traveling at 40 miles per hr. How many seconds after the front parts of the trains will meet their rear parts pass each other.
9514 1404 393
Answer:
5 seconds
Step-by-step explanation:
Suppose the front parts of the trains meet at point A. Since both are the same length and traveling the same speed, each will pass point A in time ...
time = distance/speed
time = (1/18 mi)/(40 mi/h) = (1/720 h) × (3600 s)/(1 h) = 5 s
That is, the rear part of each train will be at point A 5 seconds after the front part.
The rear parts will pass each other 5 seconds after the front parts meet.
A 25-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first piece, and the third piece is one inch more than five times the length of the first piece. Find the lengths of the pieces.
Answer:
3 inch 6 inch 16 inch 3+6+16 = 25
Step-by-step explanation:
First piesce = F
Second piece = 2F
third piece = 5F+1
F + (2F) + (5F+1) = 25
8F +1 = 25
subtract 1 om both sides
8F = 24
divide both sides by 8
F= 3
3X2= 6
3X5 +1 = 16
Which of these numbers is irrational?
Help plz due now will give brainliest
Answer:
√12 is irrational
Step-by-step explanation:
please help with this question.
Answer:
5 feet, 3 inches
Step-by-step explanation:
set up a proportion based on corresponding sides, then solve by cross-multiplying:
h/7 = 3/4
4h = 21
h = 21/4
h = 5 1/4 which is 5 feet, 3 inches
Hi, could someone quickly please help me?
1. The location of two hikers is marked on the topographic map to the right as points F and H. What is the elevation of the camper at point F?
2. Each hiker climbed to point G along the path indicated by the arrow. What was the change in elevation for the hiker that took the steepest path point G?
Answer:
740 m
Step-by-step explanation:
Answer:
2. elevation above sea level Contour lines run next to each other.
Suppose you draw a card from a well-shuffled deck of 52 cards. What is the probability of drawing a 7 or a queen?
Answer:
[tex]\frac{8}{52}[/tex] = 0.15384615384 = 15.38%
Step-by-step explanation:
There are 4 7 cards and 4 queen cards so,
[tex]\frac{4}{52}[/tex] + [tex]\frac{4}{52}[/tex] = [tex]\frac{8}{52}[/tex]
15 POINTS! DUE SOON!
Write the series using summation notation.
7 + 10 + 13 + 16 + 19
3.5(10n + 2n - 9) = 178.5
Answer:
n= 5
Step-by-step explanation:
3.5 (10n + 2n-9) = 178.5
Divide 3.5 on both sides
10n + 2n -9 +51
Add like terms to get 12n
12n - 9 = 51
12n = 51 + 9
Add 51 and 9 to get 60
12n + 60
Divide 60 by 12 to get 5
n=5
The lengths, in cm, of the sides of a triangle are 3x – 5, 2x – 1 and x + 1 (a) Write down an expression, in terms of x, for the perimeter of the triangle.
Answer: [tex]6x-5[/tex]
Step-by-step explanation:
Given
The side lengths of a triangle are [tex]3x-5, 2x-1,\text{and}\ x+1[/tex]
Perimeter(P) is the sum of the side length of the triangle i.e.
[tex]\Rightarrow P=3x-5+2x-1+x+1\\\Rightarrow P=6x-5[/tex]
Therefore, the perimeter of the triangle is [tex]6x-5[/tex]
Please help! If you do you will get 'Brainliest'
Answer:
D is your answer.
Step-by-step explanation:
if you do 2 numbers to the right you get 3 and now the half would go in between 3 which would make your answer 3 and one half
Answer:
answer (-1) because from a if u minus 2 1/2 u get (-1)
Workers inc just brought 14 boxes of pens to put in their storage. Each box contains 40 pens. If each of the 40 employees takes 2 pens how many will be left in the storage room?
Answer:
480
Step-by-step explanation:
The computation of the number of pens left in the storage room is shown below:
The total number of pens purchased is
= 14 boxes × 40 pens
= 560
ANd, the total pens take by the employee
= 40 employees × 2 pens
= 80
So, the remaining pens left is
= 540 - 80
= 480
A line is perpendicular to y = 3x - 8
and intersects the point (6, 1).
What is the slope of this
perpendicular line?
A. 3
B. 1/3
C. -3
D. -1/3
Answer:
D) -1/3
Step-by-step explanation:
Perpendicular slope (m) = -1/3
Perpendicular slopes are negative recipricals so:
3 ---> -1/3
Which of the expressions below is equivalent to 4x^2 / 12x^2-4??[tex]: 4x^2/ 12x^2 - 4[/tex]
Answer:
b
Step-by-step explanation:
Can some show the steps and the answer please I really need help tell me how you get it and the answer
Answer:
10
Step-by-step explanation:
a^2+b^2=c^2
8^2+6^2=c^2
64+36=c^2
100=C^2
the square root of 100=c (the length of that side of the ladder).
the square root of 100 is 10
quick help plzz!!!!!!!
If 3g-5=37. find g?
i need this
Answer:
g = 14
Step-by-step explanation:
Using g = 14 we can do 14 x 3 to get 42. Then we can subtract 42 by 5 to get 37.
Answer:
g = 14
Step-by-step explanation:
3g - 5 = 37
+5 +5
3g = 42
3g/3 = 42/3
g = 14
Stephany is inviting 3 friends to a party. If each friend will get 7 cookies and each box has 10 cookies, how many boxes does Stephany need to get?
Answer:
3 boxex hope that helps. yea. thats the answer
what is the vertex of f(x)=x^2-9x+14