1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igor_vitrenko [27]
3 years ago
15

Water, H2O, is made up of different elements, hydrogen and oxygen. Is this type of combination a mixture or a pure substance? A)

Because water is composed of two separate elements, it is a mixture. B) Because water can be heated and fairly easily turned to steam, it is a mixture. C) Because water is composed of elements found in the periodic table, it is a pure substance. D) Because water molecules all have a consistent ratio of hydrogen to oxygen, it is a pure substance. E
Physics
2 answers:
strojnjashka [21]3 years ago
7 0

the correct answer is D i just got it on USATestPrep. Your welcome.

Ymorist [56]3 years ago
5 0

A pure substance is a substance with a consistent ration of the elements that make it up. This means that there is no way to tell one water molecule apart from the other. The atoms in a pure compound contain atoms bonded in the same way throughout the compound.

On the other hand, a mixture  has constituents that have different pure substances mixed together. The constituents of a mixture are easy to distinguish from each other.

With these definitions in mind, we can easily see that water is a pure sustenance because water molecules all have a consistent ratio of hydrogen to oxygen atoms.

The correct answer for this question is D)Because water molecules all have a consistent ratio of hydrogen to oxygen, it is a pure substance.

You might be interested in
You can increase the gravitational potential between a car and the road by
yarga [219]

Answer:

D-Driving the car faster down the road.

7 0
3 years ago
What is the acceleration of an object that has a mass of 10kg and is pushed with a force of 50n
worty [1.4K]

Answer:

5m/s/s

Explanation:

force = mass x acceleration

50 = 10a

a=5m/s/s

7 0
2 years ago
What is the velocity of a car that traveled a total of 75 kilometers north in 1.5 hours?
swat32

The car's velocity is (distance + direction) / (time) =

                                 (75 km-north) / (1.5 hrs)  =

                                 (75/1.5)  (km-north/hr)  =  50 km/hr  north.

7 0
3 years ago
A ball is thrown vertically downwards with a speed 7.3 m/s from the top of a 51 m tall building. With what speed will it hit the
ddd [48]

Answer:

32.46m/s

Explanation:

Hello,

To solve this exercise we must be clear that the ball moves with constant acceleration with the value of gravity = 9.81m / S ^ 2

A body that moves with constant acceleration means that it moves in "a uniformly accelerated motion", which means that if the velocity is plotted with respect to time we will find a line and its slope will be the value of the acceleration, it determines how much it changes the speed with respect to time.

When performing a mathematical demonstration, it is found that the equations that define this movement are the follow

\frac {Vf^{2}-Vo^2}{2.a} =X

Where

Vf = final speed

Vo = Initial speed =7.3m/S

A = g=acceleration =9.81m/s^2

X = displacement =51m}

solving for Vf

Vf=\sqrt{Vo^2+2gX}\\Vf=\sqrt{7.3^2+2(9.81)(51)}=32.46m/s

the speed with the ball hits the ground is 32.46m/s

8 0
3 years ago
Read 2 more answers
The chart shows the percentage of different elements in the human body.
GenaCL600 [577]
I believe that answer is nitrogen.
8 0
3 years ago
Other questions:
  • An astronaut is in equilibrium when he is positioned 140 km from the center of asteroid C and 581 km from the center of asteroid
    5·1 answer
  • A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. During the collision:
    9·1 answer
  • Calculate the amount of work done if you use a 100 N force to push a 50 kg box 5 m across the kitchen floor.
    13·2 answers
  • Can Jet Fuel burn through Steel Pipes?
    15·1 answer
  • Red light has a wavelength of 500 nm. What is the frequency of red light?
    14·1 answer
  • The high-speed police chase ends at an intersection as a 2,150-kg Ford Explorer (driven by Robin) traveling south at 35 m/s coll
    12·1 answer
  • 2. A boy kicks the football of mass 500 g which is initially at rest. It starts moving with a
    7·2 answers
  • Heat flows from __________ energy to __________ energy.<br> A. higher, lower<br> B. lower, higher
    10·1 answer
  • The end of Earth’s_______ that is tilted toward the Sun receives more energy from the Sun?
    11·1 answer
  • Is it possible to code the impact force using an accelerometer?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!