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
lisabon 2012 [21]
3 years ago
12

Could someone please help me out???

Chemistry
1 answer:
alexandr1967 [171]3 years ago
4 0

Answer:

<u>Time</u><u> </u><u>is</u><u> </u><u>2</u><u>.</u><u>2</u><u> </u><u>seconds</u><u>.</u><u> </u>

Explanation:

Time:

{ \boxed{ \bf{time =  \frac{distance}{speed} }}}

Substitute into the formula:

speed = 715 km/h = 198.61 m/s

{ \tt{time =  \frac{435}{198.61} }} \\ { \tt{time = 2.2 \: seconds}}

You might be interested in
A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90 moles of a gas (n1),
Alexandra [31]

Answer:

31.58 L

Explanation:

From the question given above, the following data were obtained:

Initial mole (n₁) of gas = 1.90 moles

Initial volume (V₁) = 40 L

Final mole (n₂) = 1.90 – 0.40 = 1.5 moles

Final volume (V₂) =.?

The final volume of the gas can be obtained as follow;

V₁ / n₁ = V₂ / n₂

40 / 1.9 = V₂ / 1.5

Cross multiply

1.9 × V₂ = 40 × 1.5

1.9 × V₂ = 60

Divide both side by 1.9

V₂ = 60 / 1.9

V₂ = 31.58 L

Thus, the final volume of the gas is 31.58 L

7 0
3 years ago
A certain shade of blue has a frequency of 7.02 × 1014 Hz. What is the energy of exactly one photon of this light?
ruslelena [56]
 <span>The energy (E) per photon is expressed by Planck's equation: E = hf, where f is 
the frequency and h is Planck's constant, experimentally determined to be 
6.625 * 10**-34 joule-seconds. So to find E, we multiply h by the frequency 
and obtain E = hf = (6.625 * 10**-34)(7.0 * 10**14) = 46.375 * 10**-20 joule 
or in standard notation, E = 4.6375 * 10**-19 joule per photon. 

Hope this answers your question.Sorry if I calculated wrong.</span>
4 0
3 years ago
Read 2 more answers
Please help!!!!!! Name 3 differences between vascular and non vascular plants
Arlecino [84]
Am letting the picture doing the talk.

8 0
3 years ago
Help with 5b. Full explanation please
larisa86 [58]
Not elementary school work
8 0
3 years ago
How does a heat affect the chemical reaction? ​
patriot [66]

Answer:

Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • How does this evidence indicate that the reaction has occurred between ions?
    9·1 answer
  • Which of the following explains how electricity flows? Protons flow from the positive end of a source towards the negative end.E
    5·1 answer
  • What is the possible formula of a compound formed when sodium and chlorine bond
    9·1 answer
  • 25) How many total ions would be present when an ionic compound is formed between a
    11·1 answer
  • Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
    13·1 answer
  • List the number of each type of atom on the left side of the equation 2C6H14(l)+19O2(g)→12CO2(g)+14H2O(g) Enter your answers sep
    14·1 answer
  • Be sure to answer all parts. List the following bonds in order of decreasing ionic character: cesium to fluorine, chlorine to ch
    7·1 answer
  • Which is the formula of nitrogen (I) oxide?
    11·2 answers
  • _ _ _+Cl₂ ➡️ MgCl₂ Complete given Reaction<br>​
    12·2 answers
  • In which form are water molecules most closely bonded to each other?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!