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
svp [43]
3 years ago
9

Cindy runs 2 km every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next $1, 000 meters, one minute f

or the next 350 meters, and three minutes for the rest.
Cindy's average speed for the entire run is _____ meters per minute. 1 km is the same as 1000.
Chemistry
1 answer:
ser-zykov [4K]3 years ago
8 0

Her adverage speed would be 160 meters per second!


If you feel the answer is incorrect please comment and I will revise! Have a good day!



Proof:

2 minutes=250 meters

6 minutes=1,250 meters

7 minutes=1,600 meters

10 minutes= 1,600 meters

You might be interested in
Given the following information, what is the concentration of H2O(g) at equilibrium? [H2S](eq) = 0.671 M [O2](eq) = 0.587 M Kc =
MAVERICK [17]

<u>Answer:</u> The equilibrium concentration of water is 0.597 M

<u>Explanation:</u>

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{c}

For a general chemical reaction:

aA+bB\rightleftharpoons cC+dD

The expression for K_{eq} is written as:

K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}

The concentration of pure solids and pure liquids are taken as 1 in the expression.

For the given chemical reaction:

2H_2S(g)+O_2(g)\rightleftharpoons 2S(s)+2H_2O(g)

The expression of K_c for above equation is:

K_c=\frac{[H_2O]^2}{[H_2S]^2\times [O_2]}

We are given:

[H_2S]_{eq}=0.671M

[O_2]_{eq}=0.587M

K_c=1.35

Putting values in above expression, we get:

1.35=\frac{[H_2O]^2}{(0.671)^2\times 0.587}

[H_2O]=\sqrt{(1.35\times 0.671\times 0.671\times 0.587)}=0.597M

Hence, the equilibrium concentration of water is 0.597 M

8 0
3 years ago
the elements iron and oxygen can react to form the compound iron oxide. what type of reaction is this? please explain.
rjkz [21]
Your reaction
.. Fe + O2 ---> FexOy
for this reaction..
.. the Fe on the left is in the 0 oxidation state
.. the Fe on the right is in the +(2y/x) oxidation state
.. the O on the left is in the 0 oxidation state
.. the O on the right is in the -2 oxidation state
meaning
.. the O is reduced... . . (it's reduced in oxidation state)
.. the Fe is oxidized.. . .(oxidation state increased)
this is a REDOX reaction

*********
AND.. it's also a synthesis reaction.. (aka combination reaction)
4 0
3 years ago
Read 2 more answers
What are the 2 layers of continental crust called?​
noname [10]

Answer:

silica + aluminum or silica +magnetism

Explanation:

5 0
4 years ago
Indicate the correct number of sig figs
Dimas [21]

Explanation:

The answer to questions are

A) 4

B) 3

C) 5

D) 3

E) 3

3 0
3 years ago
Why is peer review an important part of the scientific process?
BigorU [14]

I would say B.

Explanation: Peer review improves the quality of research papers.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the boiling point of water
    15·2 answers
  • HELPP
    8·1 answer
  • would a cloud or a rock be more dense? PLSSSSSS HELP PLSSS I WILL MARK BRAINLIEST AND ANSWER SOME OF YOUR QUESTIONS
    11·1 answer
  • How many moles of methane are produced when 82.6 moles of carbon dioxide gas react with excess hydrogen gas?
    7·1 answer
  • In order to listen to the radio you need to use ______________ and _________ waves.
    6·2 answers
  • The gaseous product of a reaction is collected in a 25.0L container at 27.0 C. The pressure in the container is 3.0atm and the g
    5·1 answer
  • Cytokinesis happens differently for plant and animal cells. Both separate cytoplasm between two new daughter cells. However, whi
    9·1 answer
  • What comes out of a volcano
    6·2 answers
  • If she traveled 10 m in 5 seconds, what was her average speed?
    12·1 answer
  • A small piece of hot metal is placed in cooler water. The metal is left in the water
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!