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
Stels [109]
3 years ago
12

I really need help! Please no one has helped me! Will give BRAINLIEST, THANKS, and RATE!! Please help if you are good at science

and HURRY PLEASE!!!
How does the law of conservation of mass apply to this reaction: C2H4 + 3O2 --> 2H2O + 2CO2?
A.Only the oxygen needs to be balanced
B. The equation needs to be balanced. There are fewer oxygen atoms in the equation than hydrogen and carbon
C.The law of conservation of mass has already been applied
D. Each element needs to be balanced
Physics
2 answers:
WITCHER [35]3 years ago
8 0

It is "c", and i hope it's correct. please pm me, if you need more help

adell [148]3 years ago
3 0
I took this test and the correct answer is c 
I hope this helps
You might be interested in
According to the law of universal gravitation, any two objects are attracted to each other. The strength of the gravitational fo
3241004551 [841]

C. Planet A orbits its star faster than Planet B.

Explanation:

since Planet A is closer to the star due to its gravitational force, it will orbit its star faster than planet B

hope this helps :)

5 0
2 years ago
Suppose the U.S. national debt is about $14 trillion. If payments were made at the rate of $3,500 per second, how many years wou
andreyandreev [35.5K]

Answer:

It will take 126.84 years to pay off the debt

Explanation:

Total debt = $14,000,000,000,000.00

Paid $3,500 per second

Number of seconds to pay off the debt will be:

14 ×10^12 /3500

Number of seconds = 4× 10^9 seconds

Converting seconds to year:

I second = 3.171 ×10^-8 calendar year

Therefore, number of years it will take to pay off $14 Trillion =( 4 ×10^9 ) × ( 3.171 × 10^-8)

Number of years = 126.84 years

5 0
3 years ago
M = 15 kg, a = 2 m/s2, F =
Lisa [10]

Answer:

<h2>30 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 15 × 2

We have the final answer as

<h3>30 N</h3>

Hope this helps you

7 0
3 years ago
A 5 kg ball rolling at 1.0 m/s hits a 15 kg ball at rest. The balls stick together after the collision What is the
Reika [66]

Answer:

0.25m/s

Explanation:

Given parameters

m₁  = 5kg

v₁ = 1.0m/s

m₂ = 15kg

v₂ = 0m/s

Unknown:

velocity after collision = ?

Solution:

Momentum before collision and after collision will be the same. For inelastic collision;

    m₁v₁ + m₂v₂  = v(m₁ + m₂)

Insert parameters and solve for v;

   5 x 1  + 15 x 0 = v (5 + 15 )

          5  = 20v

          v = \frac{5}{20}   = 0.25m/s

5 0
3 years ago
Help me with physics.....<br>​due right now
serious [3.7K]

In any case, your mass would be<em> 68 kg </em>no matter what

3 0
2 years ago
Other questions:
  • In which state of matter do the particles spread apart and fill all the space available to them?
    6·2 answers
  • A spring with a mass of 5 Kg has natural length 0.5m. A force of 35.6 N is required to maintain it stretched to a length of 0.5m
    11·1 answer
  • Si se suelta una moneda desde lo alto de una casa, su velocidad inicial es <br> 4 puntos
    13·1 answer
  • What happens when a roller coaster car moves down from the top of a hill?
    10·2 answers
  • How deep would you have to drill to reach the center of earth?
    10·1 answer
  • If 2000 kg cannon fires 2 kg projectile having muzzle velocity 200 m/s than the recoil speed of the cannon will be *
    5·1 answer
  • A pickup truck is carrying a 10.0 kgkg toolbox, but the tailgate of the truck is missing, so the box can slide out if it starts
    15·1 answer
  • An aquarium has a volume of 2.75 cubic
    7·1 answer
  • A jet airplane is in level flight. The mass of the airplane is m=8950 kg. The airplane travels at a constant speed around a circ
    7·1 answer
  • When you think of the word "respiration," you might think about the process of breathing, which is actually called ventilation.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!