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3 years ago

What does the small number 2 show in this chemical formula H20?

Mathematics

2 answers:

Ganezh [65]3 years ago

8 0

It shows the amount of Hydrogen atoms there are in a water molecule

lbvjy [14]3 years ago

7 0

I think it may be 2 hydrogen molecules. Hope this helps!!

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A cylindrical pressure vessel has a height of 9 feet and a diameter of 6 feet. how much gas can the pressure vessel hold when fu

bezimeni [28]

Step-by-step explanation:

the volume of a cylinder is as for any other regular 3D object :

ground area ×height

the ground area of a cylinder is a circle, so it is

pi×radius² × height

the radius is always half of the diameter (of the diameter is airways twice the radius).

radius = 6/2 = 3 ft.

the volume is then

pi × 3² × 9 = pi × 9 × 9 = pi × 81 ft³

so, the answer is 81pi ft³.

8 0

2 years ago

What is the ordered pair for point b on the graph (-1,4) (4,-1) (5,1) (1,5)

IRINA_888 [86]

Option C: (5,1) is the ordered pair for point B

Explanation:

The graph is plotted with unit scale 1 units for both x and y axis.

We need to determine the ordered pair for point B.

<u>Ordered pair:</u>

Since, the graph is plotted with unit scale 1, the point B is 5 units away from the point (0,0)

Thus, the x - coordinate for point B is 5.

Also, the point B is 1 unit away from the point (0,0)

Thus, the y - coordinate is 1

The coordinates of point B is (5,1)

Thus, the ordered pair for point B is (5,1)

Hence, Option C is the correct answer.

5 0

4 years ago

A researcher examines typing speed before a typing class begins, halfway through the class, and after the class is over. 4. Iden

umka21 [38]

Answer:

Number of levels = 2

Type of design = Repeated measure

Dependent variable = Typing Speed

Step-by-step explanation:

The number of levels in an experiment simply refers to the number of experimental conditions in which participants are subjected to. In the scenario above, the number of levels is 2. Which are ; Halfway through the class and After the class is over.

The type of designed employed is REPEATED MEASURE, this is because the participants all took part in each experimental condition.

The dependent variable is TYPING SPEED, which is the variable which is measured with respect to the independent variable. Hence the observed value depends on period that is (halfway through the class or after the class is over).

3 0

4 years ago

Solve this equation -3x - 8 = 18

Molodets [167]

8.67 (rounded to the nearest tenth)

6 0

3 years ago

ILL GIVE BRAINLIEST PLEASE HELP MEEE

Vinil7 [7]

Answer

1.1 * 10^4 = 11,000

2.1 * 10^3 = 2,100

The elephant weighs 9,000 more lb than the giraffe

4 0

3 years ago

Read 2 more answers