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
skad [1K]
3 years ago
12

Water is a compound because it A. cannot be broken down into simpler substances. B. always has two hydrogen atoms for each oxyge

n atom. C. is made of water atoms joined together. D. both a and b
Physics
2 answers:
hjlf3 years ago
7 0
I'm almost positive it's b
Rashid [163]3 years ago
5 0

Answer: Option (B) is the correct answer.

Explanation:

A compound is defined as a substance in which two or more different elements in a fixed ratio by mass combine chemically with each other.

For example, chemical formula of water is H_{2}O and it is a compound because here two atoms of hydrogen chemically combine with one atom of oxygen.

And, the ratio of these atoms is 2 : 1. A compound can be broken down into simpler substance by chemical means only.

Whereas an element is a substance that contains only same type of atoms that cannot be broken down into simpler substances.

Thus, we can conclude that water is a compound because it always has two hydrogen atoms for each oxygen atom.

You might be interested in
A body with a mass of 2,000 kg is lifted to a height of 15 m within a time of 15 s. Which one of the following statements concer
Aleksandr [31]
<span>So we want to know which statement is true for the body of mass m=2000kg that is lifted to a height of h=15m in t=15 s. Lets calculate each of the following: Gravity force on the body is F=m*g=2000*9.81=19620 N so a is FALSE. Potential energy of the body when it is lifted to the height of 15 m is Ep=m*g*h=2000*9.81*15=294300 J so b is FALSE. Work to lift the body is: W=Fg*h=2000*9.81*15= Ep=294300 J so c is FALSE. Power P=W/t=294300/15=19620 W So d is TRUE. </span>
8 0
3 years ago
What information do you think the temperatures of stars give us?
Paul [167]

Explanation:

One way of classifying stars is by their temperature .

or

Science strives to be able to describe how stars and planets form and evolve. This requires theories to describe the processes which include:

Star and planet formation

Star and planet composition

Stellar and solar system evolution

The nuclear processes happening inside stars

The scientific method means that all theories are put to the test. By measuring or calculating the temperature, age and composition of other planets and stars the theories can be tested. If observed values of these parameters are not predicted by theories, then the theories are wrong and need to be revised or replaced.

6 0
3 years ago
Read 2 more answers
What is the process called in which water vapor and carbon dioxide retain heat
antoniya [11.8K]

The process in which water vapor and carbon dioxide retain heat is called the greenhouse effect.

<span>There are many gases which causes greenhouse effect like carbon dioxide, methane, nitrous oxide, fluorinated gases etc. These gases trap the heat in the atmosphere, resulting the surface of earth to get warm producing greenhouse effect.</span>

3 0
3 years ago
A stunt driver drives a car horizontally off the edge of a cliff at 3.8m/s and reaches the water below 2.5s later.
andreyandreev [35.5K]
A. The cliff was 30.7 m high
B. I also got 9.5 as the horizontal distance

Here is my work, I find making charts like this one to find knowns and unknowns can be helpful

4 0
3 years ago
When the Glen Canyon hydroelectric power plant in Arizona is running at capacity, 690 m3 of water flows through the dam each sec
bixtya [17]

Answer:

1340.2MW

Explanation:

Hi!

To solve this problem follow the steps below!

1 finds the maximum maximum power, using the hydraulic power equation which is the product of the flow rate by height by the specific weight of fluid

W=αhQ

α=specific weight for water =9.81KN/m^3

h=height=220m

Q=flow=690m^3/s

W=(690)(220)(9.81)=1489158Kw=1489.16MW

2. Taking into account that the generator has a 90% efficiency, Find the real power by multiplying the ideal power by the efficiency of the electric generator

Wr=(0.9)(1489.16MW)=1340.2MW

the maximum possible electric power output is 1340.2MW

3 0
3 years ago
Other questions:
  • A canoe has a velocity of 0.40 m/s southeast relative to the earth. The canoe is on a river that is flowing 0.50 m/s east relati
    8·1 answer
  • Which term describes electrons being ejected from a metal surface that light is shining on?
    12·2 answers
  • Two large metal plates of area 1.2 m^2 face each other, 6.5 cm apart, with equal charge magnitudes but opposite signs. The field
    15·1 answer
  • An upward moving object must be experiencing (or at least usually does experience) an upward force.
    12·1 answer
  • Can you help
    8·1 answer
  • 3 resistors of 3,4 and 12 ohm are there. How would you connect so as to get a resistance more than 5 oh, but less than 7 ohm sho
    8·1 answer
  • Memories
    11·1 answer
  • A different force is applied to each of four different blocks on a frictionless, horizontal surface. In which diagram does the b
    12·1 answer
  • A 2.8 kg rectangular air mattress is 2.00 m long, 0.500 m wide, and
    12·1 answer
  • Which is one factor that contributes to the formation of polar, temperate, and tropical zones?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!