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
hram777 [196]
3 years ago
15

The speed of light in a vacuum is 2.998x10^8 m/s. What is its speed in km/h?

Chemistry
1 answer:
Nina [5.8K]3 years ago
6 0

Answer:

1 079 280 000 km / hr

Explanation:

2.99800 x (10^8) (m / s) =

You might be interested in
Calculate how many moles of NH3 form when each quantity of reactant completely reacts according to the equation:
Leya [2.2K]
<span>1) Use the balanced chemical equation to find the molar ratios (proportions) of each product and reactant.

3N2H4(l)→4NH3(g)+N2(g)

=> molar ratios: 3 mol N2H4 : 4 mol NH3

2) Use the product to reactant molar ratio, and the quantity of reactant to determine the yield:

2.0 mol N2H4 * [4mol NH3] / [3mol N2H4] = 2*4/3 mol NH3 = 2.7 mol NH3

Answer: 2.7 mol
 
</span>
8 0
3 years ago
In the graphic, 195 represents the _______.
Marrrta [24]

Answer:

ITS ANSWER IS

OPTION B. ATOMIC NUMBER

HI HAVE A NICE DAY

5 0
2 years ago
If a tank of gas contains 4 L of N O2 how many molecules are in it
Jobisdone [24]

but heres a way to solve it

An athlete takes a deep breath, inhaling 1.85 L of air at 21°C and 754 mm Hg.

T

How many moles of air are in the breath? How many molecules?

Gas constant, R= 8.314 J mol ¹ K-1

PV = nRT

PV

RT

h=

=

P

= 0.08206 L atm mol-1 K-1

= 62.36 L Torr mol-1 K-1 -

1 atm = 760 mm Hg = 760 Torr

754 Forr 1.85€

6236 Jerr 294K

3 0
1 year ago
A laboratory experiment requires 4.8 l of a 2.5 m solution of sulfuric acid (h2so4), but the only available h2so4 is a 6.0 m sto
Airida [17]
To determine the amount of 6.0 M H2SO4 needed for the preparation, equate the number of moles of the 6.0 M and 2.5 M H2SO4 solution. This is done as follows
 
                                             M1 x V1 = M2 x V2

Substituting the known variables,
 
                                             (6.0 M) x V1 = (2.5 M) x (4.8 L)

Solving for V1 gives an answer of V1 = 2 L. Thus, to prepare the needed solution, dilute 2 L of 6.0 M H2SO4 solution with water until the volume reach 4.8 L. 


5 0
3 years ago
Read 2 more answers
Which of the following substances would complete a circuit and allow electricity to flow?
Elza [17]

The substances which allow the current to flow in the circuit are:  

Lithium bromide in a solution and Graphite.  

Lithium bromide can be pass the current in the circuit, due to the ability to form ions in the solution Li⁺ and Br⁻ which are mobile and can transport the electrical charge.

In the graphite because of the presence of delocalised electrons, each carbon atom forms three covalent bonds with three other carbon atoms, it conducts electrical current.

In the case of potassium chloride lattice there are in a solid form and the atoms are not mobile so they can not form ions.  In the diamond all the carbon valences are satisfied so the electrical charge can not be transported.

Nitric oxide in a solution is isolated and can not transport the electrical current due to its inability of the to form ions .

5 0
2 years ago
Other questions:
  • In a campfire, carbon from wood reacts with oxygen in a combustion reaction. If you’ve ever started a campfire, you know you mus
    10·2 answers
  • What is the ph of a 0.006 m koh solution? 1. 11.78 2. 7.00 3. 2.22 4. 8.88 5. 5.12?
    9·1 answer
  • The balloon is removed from the freezer and returned to its initial conditions. It is then heated to a tempatuew of 2T at a pres
    6·1 answer
  • According to ________, the number of transistors that could be squeezed onto a silicon chip would double every 18 months. Metcal
    9·2 answers
  • When the coffee is brewed according to directions, a pound of coffee beans yields 50 cups of coffee (4 cups = 1 qt). How many kg
    10·2 answers
  • When 100 mL of 1.0 M Na3PO4 is mixed with 100 mL of 1.0 M AgNO3, a yellow precipitate forms and [Ag ] becomes negligibly small.
    15·1 answer
  • a 160 milligram sample of a radioactive isotope decays to 10 kilograms in 12 years. what is the half life of this element
    6·1 answer
  • What volume (L) will 3.56 mol NH3 occupy at STP. (1 point)
    11·1 answer
  • You have 5 cars and you double that amount.How much cars do you have.
    7·1 answer
  • By friends leaving this app​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!