Mathematics High School

Question 83 pts
Given that 2 Al + 6 HCl → 2 AlCl3 + 3H2

UR ON TIMER GO FASTtt How many moles of hydrogen are produced if we start from 2.2 mol Al and 4.2 mol HCl?
2.1
mol H2

How many moles of excess reactant are left over?

Answers

Answer 1

Answer:

Ummm I dont know what subject it is so i will guess 2.3?

Step-by-step explanation:

I'm Sorry im really useless

Related Questions

Determine the number of solutions for this system of equations by inspection only. 3x+4y=17

21x+28y=109

Answers

Answer:

no solution

Step-by-step explanation:

to understand thisyou need to know about:system of linear equationtips and formulas:a system of linear equation has no solution if [tex]\frac{a_1}{a_2}=\frac{b_1}{b_2}\neq \frac{c_1}{c_2}[/tex]let's solve:

according to the question

[tex] \frac{3}{21} = \frac{4}{28} \neq \frac{17}{109} \\ \frac{1}{7} = \frac{1}{7} \neq \frac{17}{109} [/tex]

therefore

the system of linear equation has no solution

what is the greatest common factor of 12 and 26

Answers

Answer:

2

Step-by-step explanation:

The greatest common factor is 2

Answer:

2

Step-by-step explanation:

2 is the greatest number that will go into both 12 and 26.

Hope this helps

- Please mark brainliest :)

Could someone plz help me

Answers

Answer:

2.95 x 24 + 4

2.95 x 10 = 29.50

29.50 x 2 = 59.00

59.00 + 4 = 63.00

2.95x4 =11.80

74.80 total

hope I helped

Answer:

2.95 x 24 + 4

53.95

Find the area of the figure shown below:



a
34 square units
b
220 square units
c
480 square units
d
960 square units

Answers

Answer:

.................hshs

An architect is making a plan for a new circular playground. If the playground needs to be surrounded by a fence and the diameter of the playground is 25 meters, how much fencing needs to go up?

Answers

Answer:

78.54 m

Step-by-step explanation:

To obtain how much circular fence, we obtain the Circumference of the circular playground.

The Circumference of a circle, C = 2*pi*r

pi = 3.14 ; r = diameter / 2 = 25 /2 = 12.5 m

C = 2 * 3.14 * 12.5

C = 78.539816

Hence, the fencing which need to go up is ;

78.54 m

solve for slope / y intercept and equation please ​

Answers

Y = 3

The slope is 0, so you don’t need to write the slope, and all that’s left is yintercept or 3

There are 32 females in a dance recital. This is the ratio men to women 3:8. How many men are at the dance recital????

Answers

Answer:

12

Step-by-step explanation:

Answer:

there are 12 men

Step-by-step explanation:

men:3×4=12

woman:8×4=32


PLEASE HELP !!!!!!!!!!!!!!

Answers

Answer:

reflection and translation

Which expressions are equivalent to -1/4(16−12+8x)​?
Select all that apply.
A. 4+3−2x

B. 2x+1

C. −2x−1

D. x

E. −4+3−2x

F. 2x−

Answers

Step-by-step explanation:

Which expressions are equivalent to -1/4(16−12+8x)?

Select all that apply.

A. 4+3−2x

B. 2x+1

C. −2x−1

D. x

E. −4+3−2x

F. 2x−

OLEASE DO THIS ITS EASY PKEAS EI NEED TO FINISH IT NOW PKEASE

Answers

For x y chart 19.36.2.27.13

Lucas borrows $3,500 at 2% for 6 years. How much does he have to repay at the end of the loan total?

Answers

Answer:

$3941.57.

Step-by-step explanation:

Given,

Principal,P = $3,500

rate of interest,r = 2%

Time, n = 6 years

Now, the total amount Luca has to repay is:

[tex]A = P(1+\frac{r}{100})^n[/tex]

A is the total amount.

[tex]A = 3500\times (1+\frac{2}{100})^6\\A = $3941.57[/tex]

Hence, the total money he has to repay is $3941.57.

Can anyone solve this
90 x 180 - 25 =

Answers

Answer:

lol nvm i found it

Step-by-step explanation:

oh it's 16175 by the way

but other answer should get brainliest

Answer:

16175

Step-by-step explanation:

90 x 180 = 16200

16200 - 25 = "16175"

what is 5x+10x-2x+1y


​

Answers

Answer: The answer is 13x+y

Step-by-step explanation:

Choose an object that could be about the same length as each measurement.

Answers

Answer:

G - Foot race

F - Grain of rice

E - pencil

D - table cloth

C - persons leg

B - Ladder

A - insect


WORTH 60 points
A lab is studying the growth of bacteria population. The growth of the
bacteria population is modeled by P(x) = 2, "3", where x is the time in minutes
since the experiment began.
Part A: According to the given function, what is happening to the bacteria
each minute?
a. The population is tripling each minute.
b. The population is decreasing by a factor of each minute.
c. The population is doubling each minute.
d. The population is decreasing by a factor of each minute.
Part B: if jacks plate contains 486 pieces of bacteria after 5 minutes, what was the population of bacteria when the experiment began?
a.2
b.3
c.4
d.5

Answers

The population is tripling each minute

the length of a rectangle is 7 centimeters less than the width. What are the dimensions of the rectangle if its area is 228 square centimeters?

Answers

Answer:

L=12cm

W=19cm

Step-by-step explanation:

Hope this helps someone!!

caroline babysat for two families the nelson and the smiths. use the information below to compare her earings.

nelson a = 6.25h, where a represents the amount she earned and h represents the number of hours she babysat.
smiths : $39 for 6 hours

witch statement is true?

A. Caroline earns $6.25 an hour babysitting for the smiths.
B. Caroline earns $6.50 an hour babysitting for the nelsons.
C. Caroline earns more money per hour from the smiths.
D. Caroline earns more money per hour from the nelsons.

Answers

D, Caroline earns more money per hour from the nelsons

3+x/4>5

btw x/4 is the fraction

Answers

Answer:

x is greater than 8

Jake is rolling two dice and then finding the sum of the two results. What is the theoretical probability that he will have a sum greater than or equal to 9?

Answers

The highest amount you can get is 12, and since it is greater than it equal to, you would count 9, 10, 11, and 12. Your answer would be 4/12 or simplified 1/3

I need help please, this is urgent

Answers

Answer:

Sin x=21/29, Cos x=20/29, Tan x=21/29. Sin Z= 20/29, Cos Z=21/29, Tan 20/21

Step-by-step explanation:

Okay so basically the formula for these trig functions are

Sin=opposite/Hypotenuse

Cos= adjacent/hypotenuse

Tan= opposite/adjacent

So identify the sides and plug them into the formula above, this can be used for any problem

hope this helps

20 points+brainliest!
Which statements about the factors of the terms in the expression 12 x + 18 x y minus 24 y are true? Select three options.
The factors common to 12x and 18xy are 1, 2, 3, 6, x, and y.
The factors common to 12x and 18xy are 1, 2, 3, 6, and x.
The factors common to 12x and 24y are 1, 2, 3, 4, 6, and 12.
The GCF of the expression is 6xy.
The GCF of the expression is 6.

Answers

Answer:

C, D, E

Step-by-step explanation:

Helpppp pleaseeeee and could you put an explenation??? pleaseeee

Answers

Answer:

Step-by-step explanation:

The angles would be supplementary

45 + 5x + 35 = 180

5x + 80 = 180

5x = 100

x = 20

To find out why they are supplementary, refer to the transversal below

∠3 = ∠7 (corresponding angles)

∠8 = 180 - ∠7 (supplementary angles)

And since ∠7 = ∠3...

∠8 = 180 - ∠3 which is why (in the problem) those two angles are supplementary (adding to 180 degrees)

The points (-1,r) and (11, -1) lie on a line with slope -3/4
Find the missing coordinate r.

Answers

Answer:

8

Step-by-step explanation:

y = (-3/4)x + c

Sub (11,-1) into the equtaion

-1 = (-3/4)(11) + c

c = 29/4

y = (-3/4)x + 29/4

when x = -1,

y = (-3/4)(-1) + 29/4

y = 8

r = 8

Which quadrilateral has two sides
measuring 3 inches and two sides measuring
8 inches, with four 90° angles?

Answers

Answer:

A rectangle

because it has to opposite and two congruent sides

Construct a circle through points
X, Y, and Z.

Answers

There are different ways to draw a circle. To construct a circle through points X, Y, and Z, one must:

Steps to Construct a Circle Through Points x, y, and zSetting up the Points by drawing your points A, B, and C in any given position of your choice, know if your points are noncollinear and then draw two line segments in  the space between any two sets of points.

Drawing Perpendicular Bisectors: This can be done by Drawing an arc centered at the first endpoint of the first line segment, then draw another arc at the center of the second endpoint, then Draw a line that links the intersections of the arc and lastly draw the perpendicular bisector of the second line segment.

Draw the Circle: Through the use of a Set the compass width to the circle’s radius, move  the compass in a 360 degrees and erase the line segments, arcs, and perpendicular bisectors.

Learn more about constructing a circle  from

https://brainly.com/question/22965557


4 points
Which expression is equivalent to 3-5314 ?

Answers

Answer:

use an app called math w*y that should help you

Step-by-step explanation:

After 5 games Adrian Peterson has rushed for 498 yards. If he gains 4.5 yards per carry, how many carries will it take for him to reach 1200 yards

Answers

Answer:

156 carries

Step-by-step explanation:

Given that:

5 games = 498 yards

Number of yards Gained per carry = 4.5 yards

Target number of yards = 1200

Number of yards left to reach target :

1200 - 498 = 702 yards

Number of carries required = number of yards / yards per carry

Number of carries required = 702 / 4.5

= 156 carries

Which statements are true about the graph?

Select all that apply.

Answers

Where is the graph dude?

13. A cone with a radius of 3 inches and a height of 7 inches has the same radius as a cylinder. If the cylinder's volume is two times the volume of the cone, what is the height of the cylinder? Use 3.14 for pi​

Answers

Answer:

Step-by-step explanation:

r = 3 in

h = 7 in

volume of cone = ⅓πr²h = 21π in³

cylinder has radius r = 3 and height h.

volume of cylinder = πr²h = 9πh in³

volume of cylinder is two times the volume of cone

9πh = 2×21π

9h = 42

h = 42/9 = 4⅔ in

Choose the graph of the equation y=2.5x

Answers

Answer:

I think it's A( i edited)

Step-by-step explanation:

Bc at the end of the arrow on A it ends at 2.5 which fits the equation y=2.5x

Answer:

The answer is A.

Step-by-step explanation:

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