Answer:
Amount of NaCl = 23.376 gram
Step-by-step explanation:
Given:
Molarity = 4M
Volume of solution = 100 ml
Find:
Amount of NaCl
Computation:
Molar mass of Na = 22.99 g/mole
Molar mass of Cl = 35.45 g/mole
Molar mass of NaCl = 22.99 + 35.45
Molar mass of NaCl = 58.44 g/mole
Molarity = [moles of solute / volume of solute(ml)]1,000
4 = [moles of solute / 100]1000
Moles of solute = 0.4
moles of solute = Mass of solute / molar mass
0.4 = Amount of NaCl / 58.44
Amount of NaCl = 23.376 gram
Plz help me answer this
Answer:
sure
Step-by-step explanation:
The ratio of yellow to blue skittles in a bag is 5:9. If there are 12 more blue skittles in the bag than yellow skittles, how many yellow skittles are in the bag?
Answer:
The number of yellow skittles in the bag is 15 yellow skittles
Step-by-step explanation:
The ratio of yellow to blue skittles in the bag is 5:9
The number of blue skittles in the bag = 12 + The number of yellow skittles in the bag
From the ratio of yellow to blue skittles in the bag, we have;
Fraction of the total skittles that are yellow = 5/(5 + 9) = 5/14
Fraction of the total skittles that are blue = 9/14
Whereby placing the number of yellow skittles as Y, and the number of blue skittles as B we have;
The number of blue skittles = Y + 12
The total number of skittles = Y + Y + 12 = 2·Y + 12
Whereby the fraction of the total skittles that are blue = 9/14, we have
9/14 × (2·Y + 12) = Y + 12
9 × (2·Y + 12) = 14 × (Y + 12)
18·Y + 108 = 14·Y + 168
18·Y - 14·Y = 168 - 108 = 60
4·Y = 60
Y = 60/4 = 15
∴ The number of yellow skittles in the bag = 15
The number of blue skittles is given as = Y + 12 = 15 + 12 = 27.
I don't understand this
Answer:
P=4x-2
Step-by-step explanation:
P=x+(2x-5)+(x+3)
P=x+2x-5+x+3
P=4x-2
Given segment AC and point B that lies on AC, if AB = 9 and BC= 49, find AC
Answer:
58
Step-by-step explanation:
Let's draw this out (see attachment).
We know that since B lies on AC, we have the points in order from left to right: A, B, C.
AB = 9, which is the left portion. BC = 49, which is the right portion. Then AC is simply the sum:
AC = AB + BC = 9 + 49 = 58
The answer is thus 58.
~ an aesthetics lover
What number when increased by 15% becomes 299 Please help willl mark brainest!
Let's make an equation with the information given.
A 15% increase in a number means that the number was multiplied by 1.15.
[tex]1.15x=299[/tex]
[tex]x=260[/tex]
Hope this helps.
頑張って!
Answer:
260
Step-by-step explanation:
Let's call the number x.
When x is increased by 15% it is equal to 299. The number itself is 100%, so we should multiply x by 115%. Convert 115% to a decimal. Divide 115 by 100 or move the decimal place two spots to the right.
115/100= 1.15 or 115.0 --> 11.5 --> 1.15
When x and 1.15 are multiplied they should equal 229. Set up an equation.
1.15x=229
We want to solve for x. Therefore, we must isolate x on one side of the equation. x is being multiplied by 1.15 The inverse of multiplication is division. Divide both sides of the equation by 1.15
1.15x/1.15=229/1.15
x=229/1.15
x=260
When 260 is increased by 15% the result is 299.
How can you find a function that has these roots in a cubic polynomial function?jj
Step-by-step explanation:by substituting 1 for each of x in the equation. and apply it for problems, if the solution is 0 that means it the solution of x=1
Which statement about sutter’s work are true?
Answer:
good question
Step-by-step explanation:
go to google i guess
Answer:
The one that was listed. Unlike the ones on this question.
Step-by-step explanation:
Have
a
good
day
:)
The manager of a factory collected data in order to analyze the relationship
between the number of hours of training a worker receives and
the worker's error rate. The line of best fit for the collected data is y = 0.1 -0.005x, where x is the number of hours of training a worker
receives and y is the error rate.
What approximate error rate should the manager expect for a worker who receives 6 hours of training?
O A. 0.01
OB. 0.07
OC. 0.13
OD. 0.17
Answer:
B. 0.07
Step-by-step explanation:
You can use the "Desmos Graphing Calculator". It helps a lot.
Answer:
B
Step-by-step explanation:
PLEASE HELP! WILL GIVE BRAINLIEST!
Answer:
(18+21+17+x)÷4=20
x=24 students
Step-by-step explanation:
(18+21+17+x)÷4=20
(56+x)÷4=20
56+x=20*4
56+x=80
x=80-56
x=24
simply 12 to the power of 16 over 12 to the power of 4
Answer:
12^12
Step-by-step explanation:
If the exponent bases are the same you can subtract the exponents. Numerator minus denominator. (16-4=12)
What percent of 2434 is 17?
a 17.0%
b 0.7%
c 14,317.6%
d 7.0%
Answer:
b.) 0.7%
best of luck!
So this is asking me to order the numbers from least to the greatest can anybody please help me???
Answer: Open the image 1 wrote the numbers on top.
Step-by-step explanation:
Please help I will give brainliest
Answer:
m = 14
p = 64
n = 32
Step-by-step explanation:
11m = 154
m = [tex]\frac{154}{11}[/tex]
m = 14
180 - p = 116
180 - 116 = p <- as you noticed, the negative sign changed to a positive one, cuz p moved to the other side of the equal sign.
64 = p
n + 86 = 118
n = 118 - 86
n = 32 <- same thing happened here, except the positive changed to a negative.
p=s1t-s2t. Which equation sauce for tea........................
Answer:
f444444444444444444444444Step-by-step explanation:
f
is the quotient of two rational numbers always a rational number explain
Leanne works at a restaurant. For dinner, there is a choice of 3 main dishes and 2 sides.
Main Dish: Burger(B), Chicken (C), Pasta (P)
Sides: Apple (A), Fries (6)
Leanne lists all possible ways a person could order their dinner. She lists these combinations:
BA, BF, CA, CF, PA, PF, AB, FB, AC, FC, AP, FP.
Is Leanne correct? Use the drop-down menus to explain your reasoning.
Click the arrows to choose an answer from each menu.
For each main dish, there are Choose... different sides a person can choose. So, there are
a total of Choose... possible ways a person could choose their dinner. Leanne is
Choose...
Answer:
I feel like its that but im rlly not sure.
Step-by-step explanation:
Leanne's list is incorrect and there are 3 different sides a person can choose. So, there are a total of 6 possible ways a person could choose their dinner.
How to determine the number of combinations?The given parameters are:
Main Dish: B, C and P
Sides: A and F
Using the above parameters, the combination of dishes are:
BA, BF, CA, CF, PA and PF
Hence, we can conclude that Leanne list is incorrect
Also, we have:
Dish = 3
Sides = 2
So, the number of dinner to choose is:
Dinner = 3 * 2 = 6
Hence, a person could choose their dinner in 6 ways
Read more about combination at:
https://brainly.com/question/11732255
#SPJ2
An airline charges $150 for a ticket and $20 for each bag.
Which equation shows the relationship between the number of bags, b, and the total cost,c. for flying with this airline?
O A b = 20c + 150
B. b = 20 + 150c
O c. c = 205 +150
D. c = 20 + 150b
Answer:
Step-by-step explanation:
Alske
|3n+2|+4=0 algebra 2
I3n+2I+4=0
3n+2+4=0
3n+2=0-4 = -4
3n+2= -4
3n= -4 - 2 = -6
3n= -6
n= -6/3
n=-2
For the diagrams, find the following measures.
X=
DCB=
ABC=
two figures are similar and the scale factor is 2/3. If a side of the larger figure is 12, then the corrosponding side in the smaller figure is? 6 8 12 18
Answer:
8
Step-by-step explanation:
Since you referred to a scale factor of 2/3, and the fact that the side of the larger figure is 3, we know that the ratio of the smaller figure to the larger figure is 2/3. We can then find that the corresponding side of the smaller figure is 8.
Answer:
The guy above me is right, it is 8!
Step-by-step explanation:
I got the answer correct.
if y= 1/5 when x=3, find y when x=4, given that y varies directly with x
Answer:
[tex]y = \frac{4}{15} [/tex]Step-by-step explanation:
To find y when x=4, we must first find the relationship between them
The statement
y varies directly with x is written as
[tex]y \: \: \: \alpha \: \: \: kx[/tex]where k is the constant of proportionality
From the question
when y = 1/5
x = 3
Substitute the values into the above formula and solve
That's
[tex] \frac{1}{5} = 3k \\ 15k = 1 \\ k = \frac{1}{15} [/tex]So the formula for the variation is
[tex]y = \frac{x}{15} [/tex]From the question
when x = 4
[tex]y = \frac{4}{15} [/tex]Hope this helps you
A cyclist rides his bike at a rate of 15 miles per hour. What is this rate in miles per minute? How many miles will the cyclist travel in 10 minutes?
Answer:
This is 0.25 miles per minute
The cyclist would travel 2.5 miles in 10 minutes
Step-by-step explanation:
The equation to convert miles per hour to miles per minute is to divide by 60, the number of minutes in an hour.
if Chicago supplies 1388.8888889 of water each second, how many ft per second
Answer:
1388.8888889
Step-by-step explanation:
First of all, this looks like a problem that is incomplete. You never gave the unit of how much water they supplied, and there is not supposed to be that many decimal places. Also, a foot is a term of measurement, not volume. However, if I assume that the unknown object supplied is cubic feet, it would be 1388.8888889 cubic feet per second.
The list below shows the amount of money Hannah earned mowing lawns for the past five weeks.
$40, $15, $20, $40, $35
Which measure shows that the amount of money she earned varied?
Answer:
the answer is mean
Step-by-step explanation:
which method of finding the distance is the best? explain.
Answer:
by using formula :
square root of x2-x1 whole square plus y2-y1 whole square
hope that helps
What is the product of (–0.5)(–1.2)(–5.22)?
Answer:
-31.32
Step-by-step explanation:
(–0.5)(–1.2)(–5.22)
6(-5.22)
=>-31.32
Point Fis on line segment EG . Given FG = 4 and EF = 9 determine the length EG
Answer:
EG is 13.
Step-by-step explanation:
So we have a line segment EG.
Point F is somewhere on EG.
And we are given that FG is 4 and EF is 9.
Therefore, the length of EG will be the combined lengths of FG and EF. In other words:
[tex]EG=EF+FG[/tex]
Substitute 9 for EF and 4 for FG. Thus: "
[tex]EG=9+4[/tex]
Add:
[tex]EG=13[/tex]
So, the length is EG is 13.
And we're done!
a small submarine is at an elevation of -30 feet compared to sea level. what is its elevation after it ascends 9 feet? PLEASE HELP!!!!!!!!!!!!!!!!!!!!!! WILL GIVE BRAINLIEST AND 5 STAR TO WHOM WHO ANSWERS IT CORRECTLY!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO GUESSES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
-21 feet
Step-by-step explanation:
-30 + 9 = -21
Answer:
_______
-21 feet
_______
Johnny's backyard measures 15. wide by 10 feet long. What is the area of Johnny's
backyard in square feet?
square feet.
Answer:
150
Step-by-step explanation:
To find the area, you have to multiply by the length and width.
L = 10
W = 15
15 x 10 = 150
Hope this helps! <3
Carla is making bracelets she wants to put 10 charms on each bracelet charms are sold in packets of 12 what is the least number of packages she can buy to make bracelets with no charms left over
Answer:
Carla can buy 5 packets of charms.
Step-by-step explanation:
5 packets of charms would be able to make 6 bracelets.
*please give me brainliest, i only need three more*