All categories

3 years ago

Solid carbon (C) can burn in oxygen (O2). Select

Chemistry

2 answers:

lilavasa [31]3 years ago

6 0

Answer:

The complete chemical equation is as;

C + O₂ → CO₂

Explanation:

According to law of mass conservation the mass in isolated system can neither be created nor be destroyed. Applying this law to given synthesis reaction means that,

(i) If there is one carbon atom on left hand side of the equation (reactant side) then there must be on e carbon on right hand side (product side) of the equation.

(ii) If there are two oxygen atoms on left hand side of the equation (reactant side) then there must be two oxygen atoms on right hand side (product side) of the equation.

Hence, from equation it is proved that it obeys the said law and the number of atoms on both side are equal i.e.

Reactant Side Product Side

Carbon 1 1

Oxygen 2 2

allsm [11]3 years ago

6 0

Answer:

CO2

Explanation:

You might be interested in

8. Skin cancer is a disease that occurs when skin cells grow in an uncontrolled way. It can be caused by UV

Levart [38]

Answer:

Explanation:

I think none of the above, because when caused by a UV light it damages the cells. And if enough builds up overtime it causes uncontrollable growth and leads to skin cancer.

Hope that helped? It might be another answer honestly.

3 0

3 years ago

What is/are one of the environmental waste products of nuclear energy?

Alenkinab [10]

D. radioactive isotopes are one of the environmental waste products of nuclear energy.

4 0

3 years ago

Read 2 more answers

A wooden tool is found at an archaeological site. Estimate the age of the tool using the following information: A 100 gram sampl

lord [1]

Answer:

2578.99 years

Explanation:

Given that:

100 g of the wood is emitting 1120 β-particles per minute

Also,

1 g of the wood is emitting 11.20 β-particles per minute

Given, Decay rate = 15.3 % per minute per gram

So,

Concentration left can be calculated as:-

C left = $[A_t]=\frac{11.20\ per\ minute}{15.3\ per\ minute\ per\ gram}\times [A_0]= 0.7320[A_0]$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Also, Half life of carbon-14 = 5730 years

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{5730}\ years^{-1}$

The rate constant, k = 0.000120968 year⁻¹

Time =?

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

So,

$\frac {[A_t]}{[A_0]}=e^{-0.000120968\times t}$

$\frac {0.7320[A_0]}{[A_0]}=e^{-0.000120968\times t}$

$0.7320=e^{-0.000120968\times t}$

$ln\ 0.7320=-0.000120968\times t$

t = 2578.99 years

8 0

3 years ago

Why will frequency decrease when wave gets longer

amid [387]

The frequency will decrease because the waves are getting farther and farther apart and if they and as that happens with shorter and shorter so they decrease

5 0

3 years ago

If a horse is at a stop and then starts running is the horse accelerating or decelerating?

NISA [10]

Answer:

accelerating

Explanation:

technically, there is no such thing as deceleration, just negative acceleration.

5 0

3 years ago

Read 2 more answers