During a science experiment, your teacher does a demonstration. She takes a
small piece of rope, weighs it to find its starting weight, burns it, and then
weighs it again. The final mass of the product is different from the starting
weight of the reactant.
Why is the final mass different? Does this mean that the product has less
mass? Why or why not?

Answers

Answer 1

Answer:

less mass

Step-by-step explanation:

The product has less mass because some of its mass got burned. Hope this helps!

Answer 2

some parts of the rope turned into gasses because of the intense heat (fire)


Related Questions

help please please please please please please please please​

Answers

Question 1=  $7,620

Question 2 (a) $3,211

Question 2 (b) $9,828

In a school of 450 students, 48% are
girls. How many are girls?​

Answers

Answer:

216

Step-by-step explanation:

.48 * 450 = 216

Answer:

There are 216 girls in that school.

Step-by-step explanation:

hope this helps! have a great day.

the average weight of a nine-banded armadillo is 4.5 kilograms what is the armadillo average weight in pounds?(1kg =2.2 Ib )

Answers

Answer:

9.9lb

Step-by-step explanation:

2.2*4.5=9.9

Answer:

9.9 lb

Step-by-step explanation:

4.5 x 2.2 = 9.9

James and mark are delivering newspapers. If James delivers 100 papers in one hour and Mark delivers
150 papers in two hours, how long will it take both of them working together to deliver 1225
newspapers?

Answers

Answer:

7 hours!

Step-by-step explanation:

how can you multiply 1/3 so that the fraction you get you can simplify back to 1/3?

Answers

Answer:

1

Step-by-step explanation:

Multiply 1/3 x 1 so you can simplify 1/3 to 1/3 but other wise 2/6 is 1/3 3/9 is 1/3 and etc

Graph the linear equation and create a table of values

5.) y= -5x

Answers

table:
x|y
-2 | 10
-1 | 5
0 | 0
1 | -5
2 | -10

Please help me with these

Answers

Answer:

The first one is -28x

Step-by-step explanation:

2^2x is 4x and 4x-32x is -28

Parallel to y=-3x+4, x-intercept at 4

Answers

Answer:

y = -3x + 12

Step-by-step explanation:

The slope of parallel line is the same as the original line.

If the x-intercept is 4, this as a point can be stated as (4, 0)

We can now solve for the y-intercept.

y = -3x + b

0 = -3(4) + b

0 = -12 + b

12 = b

Put everything we solved for back into the formula [ y = mx + b ]

y = -3x + 12

Best of Luck!

Please help!
(Please do not answer with links or “idk but good luck”)

2(4z + 9) = 34

Answers

z = 2

Distribute: 8z + 18 = 34
Then subtract 18 from both sides
8z = 16
Divide both sides by 8 to isolate z

Answer: z=2

Step-by-step explanation:

Which two expressions each represent 3/12 ?

Answers

Answer:

first option

Step-by-step explanation:

i think its self explanatory!!!

A rotation maps point A(5, 4) to A’(–4, 5).


Which describes the rotation?
180° clockwise rotation
180° counterclockwise rotation
90° counterclockwise rotation
90° clockwise rotation

Answers

Answer:

C

Step-by-step explanation:

James walk to school 12 out of 20 days which value is equivalent to the fraction of days James walk to school

Answers

Answer:

3/5

Step-by-step explanation:

all you have to do is get the fraction to its lowest point and you get 3/5.

Look at the graph. Which of the following statements is false?

Answers

Answer:

if the y is 0, does that mean it don't have a y-intercept? is the 0 the point of origin?

HELP I CANT GET A BAD GRADE

The gestation period is the length of the time it takes a baby mammal to develop before it is born. The gestation period of a horse is, on average, 336 days. About how many weeks is that? There are 7 days in a week.

A.
50 weeks

B.
60 weeks

C.
40 weeks

D.
5 weeks

Answers

Answer:

a. 50 weeks

Step-by-step explanation:

The science club and the French club both ordered pizzas for their end-of-year banquets. After the banquets, the science club had 1 1/4 pizzas leftover and the French club had 2 5/24 pizzas leftover. Between the two clubs, how many total pizzas were leftover?

A. 23/24

B. 1 1/4

C. 3 1/4

D. 3 11/24

Answers

Answer:

[tex]3\frac{11}{24}[/tex]

Step-by-step explanation:

Given parameters:

Leftover pizza from the Science club = [tex]1\frac{1}{4}[/tex]

Left over pizza from french club  = [tex]2\frac{5}{24}[/tex]

Unknown;

Total left over pizzas between the two clubs = ?

Now to solve problem, simply add the leftover from the science club and the french club together;

      Total left over pizza  = [tex]1\frac{1}{4}[/tex]   + [tex]2\frac{5}{24}[/tex]  

                                         = [tex]\frac{5}{4} + \frac{53}{24}[/tex]  

                                         =  [tex]\frac{83}{24}[/tex]

                                         = [tex]3\frac{11}{24}[/tex]

The total left over pizza between the two clubs is [tex]3\frac{11}{24}[/tex]

You have the opportunity to run the helium balloon stand at the Alexander County Fair. Your start-up supplies will cost $60. It will cost $.05 to fill each balloon you sell with helium. You are going to sell each balloon for $1.25. Find your break-even point. How many balloons will you need to sell in order to break- even?​

Answers

Answer:

50

Step-by-step explanation:

1.25 - .05 = 1.20 made per balloon

60/1.2 = 50 balloons sold to recoup 60$ start up and break even

What is the solution to the following system of equations? 3x-2y=19y=X - 7

Answers

Answer:

y = 1

Step-by-step explanation:

3(7) - 2y = 19y

21 - 2y = 19y

21 = 21y

y = 1

The cost of a layer cake is $17 plus $5 per layer. If Paul has only $30 to spend on a cake, what is the most number of layers he can afford?
(Show how to solve it)

Answers

Answer:

The most number of layers he can afford is 2

Step-by-step explanation:

We automatically have a fee of 17 so we know we have 13 dollars remaining. Using this information, we know that one layer is 5 dollars which means we can get 2 layers which is equal to 10 dollars which turns our total fee to $27. Hope this helps!

first off you have the starting cost (C).
C=$17

each layer is $5, so that becomes 5x.

the equation will be $17+5x=30

hope this helped !! :)

Help fast I’ll give brainliest

Answers

Answer:

+45

Step-by-step explanation:

a deposit is a sum of money placed or kept in a bank account, usually to gain interest

I need some help, please

Answers

Answer:

0

I hope this helps!

if l is parallel to m, find the value of each missing variable(s)

Answers

Answer:

x=24 y=15

step by step solution:

1.The growth of a sample of bacteria can be modeled by the function b(t)=100(1.06)t where b is the number of bacteria and t is time in hours.

What is the number of total bacteria after 3 hours?

Answers

Given:

The growth of a sample of bacteria can be modeled by the function

[tex]b(t)=100(1.06)^t[/tex]

where, b is the number of bacteria and t is time in hours.

To find:

The number of total bacteria after 3 hours.

Solution:

We have,

[tex]b(t)=100(1.06)^t[/tex]

Here, b(t) number of total bacteria after t hours.

Substitute t=3 in the given function, to find the number of total bacteria after 3 hours.

[tex]b(t)=100(1.06)^3[/tex]

[tex]b(t)=100(1.191016)[/tex]

[tex]b(t)=119.1016 [/tex]

Therefore, the number of total bacteria after 3 hours is 119.1016.

Solve for y:
-9.6 - y + 4.4y = -1.5

Answers

Answer:

y = 81/34

Step-by-step explanation:

-96+34y=-15

-96+34y+96=-15+96

34y=81

34y/34 = 81/34

y= 81/34

1 Polygon Q is a scaled copy of Polygon using a scale factor of 2. Polygon Q's area is what fraction of Polygon P's area?​

Answers

Answer:

The answer is 5

Step-by-step explanation:

3+2=5

A customer was so happy with your service that they wanted to give you a 15% tip on the price of the car. If their car costs $43,780, how much would they pay you in tip?

Answers

Answer:

$6,567

Step-by-step explanation:

Multiply $43,780 by .15

Help Simplify 6(x + 4).

Answers

Answer:

6x+24

Step-by-step explanation:

The simplified form of the expression 6(x + 4) is 6x + 24.

We have,

To simplify the expression 6(x + 4), we can apply the distributive property of multiplication over addition.

The distributive property states that when we have a number multiplied by a sum of terms, we can distribute the multiplication to each term separately and then simplify.

In this case, we have 6 multiplied by the sum (x + 4). Applying the distributive property, we can multiply 6 by both x and 4:

6(x + 4) = 6 * x + 6 * 4

Simplifying further:

6x + 24

Therefore,

The simplified form of the expression 6(x + 4) is 6x + 24.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ6

Karen bought cupcakes for her sister's birthday party. 3 cupcakes had sprinkles on top. The other 27 cupcakes did not have sprinkles. What percentage of the cupcakes had sprinkles?

Answers

Answer:

10%

Step-by-step explanation:

so

3 cupcakes had sprinkles

27 didn't have sprinkles

which means that there are a total of 30 cupcakes, (because 3 + 27 is 30)

so then set up a proportion

part/whole = percent/one hundred

substitute in the given values

3 / 30= precent/100

simplify

1/10 = precent/100

you don't have to use cross products here because it is pretty obvious that 10 * 10 = 100 so then just multiply 1/10 by 10 and you get your answer

percent = 10

Jason earns $28 for every 4 lawns he mows.

PLZ HELP ME IM GIVING 40 POINTS
. Jason earns $28 for every 4 lawns he mows. If he wants to make $140, how many lawns does he need to mow?

Answers

Answer:

This could easily be answered with a culculator but the answer is 20.

Step-by-step explanation:

5x4=20

ILL GIVE BRAINLIEST TO WHOEVER ANSWERES FIRST

Enter the midpoint of the segment whose endpoints are (6,5) and (-4,16).

Answers

the midpoint is x1 and y10.5

Answer:

(1, 10.5)

Step-by-step explanation:

X-  6 + -4 = 2/2 = 1

Y-   5 + 16 = 21/2 = 10.5

You add the x coordinates together then divide by 2, then do the same with the y coordinates.

Marcus is trying to lose weight for next football season, Four weeks into his diet, he weighed 232
pounds. At nine weeks, he weighed 224.5 pounds. How many weeks will it take Marcus to reach his
goal weight of 214 pounds?

Answers

Answer:

12 weeks

Step-by-step explanation:

every 5 weeks marcus lost 7.5 pounds (232 - 224.5)

or 1.5 per week

so 232 - 214 (start to goal) is a total of 18 pounds

18/1.5 = 12 weeks

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