Answer:
110 grams
Step-by-step explanation:
CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).
So first finding the mass of 1 molecule of CO2 which is equals to
= mass of 1 carbon atom + masses of 2 oxygen atom, we get
= 12+(16*2)= 12+32= 44 a.m.u.
Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )
1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams
So our answer is 110 grams.
lowkey hope this helped you, good luck whatever you need it for Imaooo
There are 40 working hours in a week and 52 weeks a year. How much does Nate need to make an hour to stay out of debt if it costs him $900 to live each month?
Answer: $5.19
Step-by-step explanation:
If there are 40 working hours in a week and 52 weeks in a year, 40 * 52 should be the amount of working hours in a year.
40 * 52 = 2080 working hours
Nate needs $900 to live each month and there are 12 months in a year, so $900 * 12 would equal how much he spends per year.
$900 * 12 = $10800
Divide $10800 by 2080 working hours to get how much he needs to make per working hour.
10800/2080 = approximately 5.19, rounded down from the nearest hundredth
He needs to make $5.19 per hour, so the answer is the last option.
True or False: Similar and congruent mean the same thing.
Answer:
true
Step-by-step explanation:
Answer: False
Step-by-step explanation: Similar means that only the angles are the same, but the sides are not. Congruent means the angles and sides are the same.
GIVE BRAINLEIST
A gift store owner used 9 rolls of wrapping paper to wrap his customers’ gifts last week. Each roll was 66 1/2 in. long. How many gifts did he wrap if a 9 1/2 in. long piece of wrapping paper was used to wrap each gift?
Answer:
7
Step-by-step explanation:
divide 66.5 by 9.5
Nevaeh and Trishant are selling candy for a fundraiser. Nevaeh sold 13 boxes of plain chocolate bars and 14 boxed of mixed flavored chocolate bars for a total of $316. Trishant sold 4 boxes of plain chocolate bars and 14 boxed of mixed flavored chocolate bars for a total of $262. What was the cost for a box of each type of bars?
Answer:
13$
Step-by-step explanation:
Write each number in scientific notation. 1. 14,700
2. 0.00083
3. 760,000,000
4. 0.038
5. 0.38
6. 3.8
7. 3,800,000,000,000
8. 0.0000000009
Question Progress
Homework Progress
16/32 Marics
Toby goes on holiday to Geneva, Switzerland.
In Geneva, Toby sees a watch costing 193.75 CHF (Swiss Francs).
In Manchester, an identical watch costs £145.
Given that £1 = 1.55 CHF
a) In which city is the watch cheaper?
b) By how much is it cheaper (in £)?
Please help for a grade!?
Answer:
8.9
Step-by-step explanation:
You can buy 2 tickets to school carnival for $9 total.
How many tickets can you buy for $27?
Answer:
6
Step-by-step explanation:
pls brainliest
9/2=4.5
27/4.5=6
A linear equation is shown on the graph. Which equation best represents the
relationship between x and y?
SOMEONE PLEASE HELP ASAP
Answer:
y=2x+1
Step-by-step explanation:
God loves you and he cares about you so repent becuase he is coming soon
Answer:
Yes god is really good
Step-by-step explanation:
What is the final amount if 700 is decreased by 6% followed by a 7% increase Rounded to 2 decimal places
Answer:
816.67
Step-by-step explanation:
A store offers a 15% discount on their pants. If the pants originally cost $30.00 what will be the discount price of the pants? (the total cost after the discount)
Answer:
The pants will either be 25.50 or 4.50. Sorry I'm not sure if 15% off 30.00 is the number minus the original price or not.
Step-by-step explanation:
PLS I NEED HELP ASAP I DONT HAVE TIME IT ALSO DETECTS IF IT RIGHT OR WRONG.
Answer:
D = 272 ft
Step-by-step explanation: hope this helps. pls mark me brainliest
The difference of a number c and 17 is more than 33.
Answer:
c-17=x>33
c=51
Step-by-step explanation:
The value of number c should be greater than 50.
It is given that difference of a number c and 17 is more than 33.
We have to find out the value of number c.
What do you mean by algebraic expressions ?
The algebraic expressions are those which are made up of variables, constants and algebraic operations i.e., addition, subtraction, etc.
As per the question ;
The difference of c and 17 is more than 33.
i.e.,
difference of c and 17 meant ; 17 should be subtracted from c and this is greater than 33.
i.e.,
c - 17 > 33
c > 33 + 17
c > 50
Thus , the value of number c should be greater than 50.
To learn more about algebraic expressions click here ;
https://brainly.ph/question/20786412
#SPJ2
In the diagram Shown a 2-foot wide flower border surrounds the heart-shaped pond. What is the area of the border?
!!PLEASE HELP!!
Answer:
Step-by-step explanation:
Area of square = 144 sq ft
Area of circle = πr² = 36π sq ft
Total area = (144+36π) sq ft
Square section of pond is 10 ft by 10 ft, area = 100 sq ft
Circular area of pond has diameter of 8 ft.
Area = πr² = 16π sq ft
Area of pond = (100+16π) sq ft
Area of border = (144+36π)-(100+16π) = (44+20π) sq ft
On a particular day 4% of the students were absent. If there are 1750 students at the school then how many were not absent that day?
a) 70
b) 1050
c) 1650
d) 1680
*pls help will mark brainliest!!!*
Answer:
A) 70
Hope this helps :)
A Mars rover descended from the rim of a crater at a constant rate. After 2 days, the rover's elevation was 106 meters. After 6 days, its elevation was 48 meters. What elevation did the rover start at? ____meters Complete the equation that describes the relationship between the rover's elevation in meters, E, and the elapsed time in days, t. Write your answer using whole numbers or decimals rounded to the nearest tenth. E= ___ t+____
Answer:
135
E = - 14.5t + 135
Step-by-step explanation:
Given that, descent rate is constant ;
Elevation after 2 days = 106 m
Elevation after 6 days = 48 m
Let
Rate of elevation per day= x
Initial elevation = a
Hence,
a - 2x = 106 - - - (1)
a - 6x = 48 ___(2)
-2x + 6x = 106 - 48
4x = 58
x = 58/4
x = 14.5 meters per day
Hence, initial elevation :
a - 2(14.5) = 106
a - 29 = 106
a = 106 + 29
a = 135
Relationship between Rover's elevation, E and elapsed time, t
E = - 14.5t + 135
-14.5 = rate per day
what is -2x(x+3y)-5y(4x-3)+2xy
Answer:
[tex]2x^{2}[/tex]-24xy+15y
Step-by-step explanation:
Status
Exam
Find the missing length.
10
4
C=
✓ [?]
Pythagorean Theorem: a? + b2 = ?
Enter
Answer:
116
Step-by-step explanation:
-5(-4m - 6)
you have to use the distributive property
20m - 30
-20m - 30
20m + 30
pick the right answer
Answer:
1 is the correct answer
Step-by-step explanation:
The Harvey family stayed at a hotel for n nights. The cost was $80 per night plus a one-time fee of $20 because they brought their dog. Which expression represent the total cost of their hotel stay.
80n + 20n
80n + 20
80 + 20n
80 + 20 + n
Answer:
80n + 20
Step-by-step explanation:
20 stays the same because it's a one time fee. Then, for every night the Harvey family stays, it costs them eighty dollars. So, it's 80n + 20
Answer: 80n+20
Step-by-step explanation:
80 is the cost of nights you stayed but you don’t know the number of nights they dated so you place n next to 80 and they payed an additional 20 fee so you add that to 80n
Triangle ABC has the following characteristics. Angle A is right angle. AB=8. AC= 15. Find BC
A. 12
B. √161
C. 17
D. 23
please help to solve this
Answer:
I can do the top 2
1. a = -11
2. z = 9/2 (or nine over two in word form)
Step-by-step explanation:
Which ordered pairs are solutions to the equation 4x+2y=4?
Select the correct answer below:
(2,−6)
(1,5)
(−5,5)
(5,3)
none of the above
9, 14, 7, 9, 3, 12, 5,4
Find the mean and median travel times for these students.
If necessary, round your answers to the nearest tenth
Mean: _ minutes
Median: __ minutes
Answer:
mean: 65
median: 9
Step-by-step explanation:
You take all the numbers you have and add them up. Make it simple by adding smaller numbers together. Then once you have the total which is 65 you divide it by the total of numbers you have and then round because after dividing you get 8.125 and the safest way to round is to 9.
Help Plz
Will mark brainliest
Answer: 20.8ft
Step-by-step explanation:
Answer:
26/8 = 3.25
10 x 3.25 = 32.5
The answer is 32.5 ft
Kevin cuts a foam block along the red line. When he looks at the newly
exposed face, what is the shape of the cross-section?
4 cm
7 cm
5 cm
A. A rectangle, 4 cm by 7 cm
B. A rectangle, 4 cm by 5 cm
C. A square, 4 cm by 4 cm
D. A rectangle, 5 cm by 7 cm
Answer:
I think B
Step-by-step explanation:
It's not a square when you cut it since after you cut one side the length would by 4cm by 5cm so there for it's not a square but a rectangle
sorry if it's wrong
can u pls help me with this question asap
Answer:
I believe that answer A would be the best choice. It makes the most sense with what the question is asking for.
Step-by-step explanation:
can someone pls help me
Answer:
The slope
Step-by-step explanation:
Y= y intercept
hope this helps :)
Classify the expression: 5x3+2x-3
Quadratic expression
Linear expression
Cubic expression
Exponential expression
Considering that it's highest exponent is of 3, the expression 5x³ + 2x - 3 is a cubic expression.
What is the degree of a polynomial?The degree of a polynomial is given by the highest exponent.
The highest exponent of the expression 5x³ + 2x - 3 is a 3, hence it is a cubic expression.
More can be learned about the degree of a polynomial at https://brainly.com/question/24380382
#SPJ1
Answer: C: cubic expression
Step-by-step explanation:
Classify the expression: 5x³ + 2x − 3
we know that
Polynomials can be classified two different ways - by the number of terms and by their degree.
so
a) By the number of terms is a trinomial, because has three terms
b) By their degree The degree of the polynomial is found by looking at the term with the highest exponent on its variable
The highest exponent is 3 so this is a 3rd degree trinomial
therefore
Is a cubic expression