All categories

3 years ago

What is a scientific problem in the world that really bugs you

Chemistry

1 answer:

Korolek [52]3 years ago

6 0

Answer:

A scientific problem is something you don't understand but you can do an experiment to help you understand. Scientific problems are usually based on observation of scientific phenomena. Here is some advice to help you identify a scientific problem you can address by designing your own experiment.

Explanation:

Example of a scientific problem are Clean Drinking Water.

You might be interested in

A sample of iron absorbs 81.0 J of heat, upon which the temperature of the sample increases from 17.9 °C to 32.5 °C.

Inessa [10]

Answer:

Mass = 12.33 g

Explanation:

The expression for the calculation of the enthalpy change of a process is shown below as:-

$\Delta H=m\times C\times \Delta T$

Where,

$\Delta H$ is the enthalpy change

m is the mass

C is the specific heat capacity

$\Delta T$ is the temperature change

Thus, given that:-

Specific heat = 0.450 J/g°C

$\Delta T=32.5-17.9\ ^0C=14.6\ ^0C$

$\Delta H$ = 81.0 J

So,

$81.0=m\times 0.450\times 14.6$

Mass = 12.33 g

4 0

4 years ago

Hydrogen is prepared commercially by the reaction of methane and water vapor at elevated temperatures. CH₄(????) + H₂O(????) ⇌ 3

sammy [17]

Answer:

6.2846

Explanation:

Given that:-

Concentrations at equilibrium :-

$[CH_4]=0.126\ M$

$[H_2O]= 0.242\ M$

$[CO]= 0.126\ M$

$[H_2]= 1.15\ M$

The equilibrium reaction is:-

$CH_4+H_2O\rightleftharpoons 3H_2+CO$

The expression for equilibrium constant is:

$K_{c}=\frac {\left [ H_2 \right ]^3\left [ CO \right ]}{\left [ CH_4 \right ]\left [ H_2O \right ]}$

Applying the values as:-

$K_c=\frac{1.15^3\times 0.126}{0.126\times 0.242}=6.2846$

The equilibrium constant for the reaction is:- 6.2846

5 0

3 years ago

Which planet has a distinctive red spot? A. Mercury B. Venus C. Jupiter D. Mars

Firdavs [7]

Jupiter------------------------

3 0

4 years ago

Read 2 more answers

When a piece of paper with words on it is placed behind a clear jar of water the letters seem to change size. Some appear larger

r-ruslan [8.4K]

Answer:

because of the process of refraction of light.

Explanation:

Note, the term refraction refers to the process which results in the bending of light as it passes through a medium. This bending of light can make objects become magnified (or larger), or even smaller.

In this scenario, as the light passes slowly through water it affects how we perceive the objects (the words on the paper) behind the jar (more likely a glass jar). In other words, the light combined with the water refracts (changes direction of) the lights our eyes can see, making the letters seem to change size.

4 0

3 years ago

Ethanol and water have different boiling points, and when mixed they form a homogeneous mixture. By which process could the mixt

erastovalidia [21]

the answer your looking for is a because it latterly says it right there. look closer to what its asking you

8 0

3 years ago

Read 2 more answers