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
alexdok [17]
3 years ago
9

How can a match light without a spark

Chemistry
2 answers:
Serhud [2]3 years ago
8 0

Answer:

Use friction

Explanation:

Friction is the force that stops something in motion. It also heats up something, creating a gravitational heat! A match striked against the lighter will create a flame, because of friction :)

luda_lava [24]3 years ago
8 0
Using friction would. Newton’s law applies here and many other situations
You might be interested in
purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode
stiv31 [10]

The chromium in the electrolytic solution is present as cr³⁺ will take 6.19 hours  will it take to plate 18.0 kg of chromium onto the cathode if the current passed through the cell is held constant at 45.0 A.

It is given that mass is 18 kg. Converting mass into grams

18 x (1000g / 1 kg)

= 18000 g

So, 18 kg = 18000 g

Now, calculate the number of moles

No. of moles = mass of Cr / molecular mass of Cr

No. of moles = 18000 / 52 g/mole

No. of moles = 346.15 mole

For , Cr³⁺, 3 moles of electrons are required

Hence,

3 x 346.15 mole

1038.45

As 96500 C of charge are present in 1 mole of electrons. As a result, the charge held by 1038.45 mole of electrons will be determined as follows.

= 1038.45mol x  96500 C / mole

= 10.02 x 10⁷ C

As, we know that relation between charge, current and time is as follows.

Q = I x T

Current is given as 45 A

Therefore, charge is calculated  

T = Q / I

T = 100.21 x 10⁶ / 45

T = 2.227 x 10⁶

As there are 3600 seconds in one 1 hour. Converting 2.227 x 10⁶ into hours are

= 2.227 x 10⁶ / 3600 sec/h

= 6.19 hours

Thus, if the current flowing through the cell is maintained constant at 45 A, we may estimate that it will take 6.19 hours to plate 18 kg of chromium onto the cathode.

To know more about  electrolytic solution visit :

brainly.com/question/9203208

#SPJ4

4 0
1 year ago
hich quantity describes how spread out a set of data is? O A. Standard deviation O B. Percent error O C. Line of best fit D. Mea
juin [17]

The answer to this is B.

6 0
3 years ago
What is the percentage of water in the following compound? answer using one decimal place. sodium carbonate decahydrate, na2co3
ehidna [41]

The percentage by mass of water in Na2CO3.10H2O from the calculation is  62.9%

<h3>What is percentage by mass?</h3>

The term percentage by mass refers to the amount of a particular moiety by mass in a molecule.

In this case, we know that the molar mass of Na2CO3.10H2O is 286 g/mol the molar mass of the 10 moles of water is 180 g/mol hence the percentage by mass of water in the compound is; 180 g/mol /286 g/mol  * 100/1 = 62.9%

Learn more about percentage by mass: brainly.com/question/16885872

#SPJ2

6 0
2 years ago
Read 2 more answers
How many electrons, protons and neutrons does the element Argon have?
erik [133]

Answer:

18 Protons

18 Neutrons

&

18 Electrons

8 0
1 year ago
Which of the gases behave the least ideal?<br> Kr2, CO2,H2,CCl4, N2. All ages same temp and pressure
Scorpion4ik [409]

Answer:

CCl4

Explanation:

Because the size of the molecule  and the inter molecular forces  are greater than the others.

4 0
2 years ago
Other questions:
  • True False The colors emitted depends on the number of free electrons passing through the lamp. True False When a free electron
    11·1 answer
  • When multiplying numbers in scientific notation what do you do with exponents?
    10·1 answer
  • Complete combustion of 7.40 g of a hydrocarbon produced 22.4 g of CO2 and 11.5 g of H2O. What is the empirical formula for the h
    12·1 answer
  • Is making ice cream a physical or chemical change
    15·2 answers
  • A professional technician maintains and operates specialized scientific equipment true or false
    10·1 answer
  • Consider the reaction: N2(g) + O2(g) ⇄ 2NO(g) Kc = 0.10 at 2000oC Starting with initial concentrations of 0.040 mol/L of N2 and
    8·1 answer
  • What is the normal boiling point of an aqueous solution that has a freezing point of ?5.92?c?
    11·1 answer
  • How many moles of solute are needed to prepare a 2.35 liter solution of 2.00 M Cu(NO3)2 solution
    9·1 answer
  • 45.6 grams of CH4 is placed into a 275 mL container at 55.00C. What is the pressure inside the container in atm?
    10·1 answer
  • According to the principle of conservation of momentum,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!