2 years ago

Chemical equations must be properly balanced because chemical reactions follow the first law of thermodynamics.

1 answer:

7 0

I thinking it’s true. The law of conservation of matter has been satisfied. When the reactants and products of a chemical equation have the same number of atoms of all elements present, we say that an equation is balanced. All proper chemical equations are balanced.

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For the data set table 65, 75, 64, 20, 80, 125. what is the mean of this data set table?

Deffense [45]

Answer:

71.5

Step-by-step explanation:

Mean = Sum of data values/How many data values

65+75+64+20+80+125= 429

There are 6 data values in this data set.

429/6 = 71.5

Mean=71.5

8 0

2 years ago

A bathtub can be filled in 8 min. it takes 12 min for the bathtub to drain. if the faucet is turned on but the drain is also lef

ZanzabumX [31]

Time taken to fill the bathtub is 8 min
time taken to drain the bathtub is 12 min
fraction of bathtub filled in 1 hour=1/8
fraction of bathtub drained in 1 hour=1/12
fraction that will be filled in a minute given that both taps are opened at he same time:
1/8-1/12
=1/24
thus time taken for the bathtub to be filled is 24 min

3 0

2 years ago

Suppose that all of the points on the circular dartboard shown are equally likely to be hit by a dart. If the radius of the shad

jekas [21]

This must double your chances so if i round the nearest whole number would be 8 any questions?

6 0

2 years ago

Read 2 more answers

Which of the following describes the diagonals of a square?

Feliz [49]

Answer:

ALL OF THE ANSWERS ARE CORRECT .

HOPE IT HELP YOU.

5 0

2 years ago

What’s the length of the hypotenuse?

denis23 [38]

a² + b² = c²

9² + 12² = c²

81 + 144 = c²

225 = c²

15² = c²

15 = c

7 0

2 years ago