All categories

3 years ago

[15 points] please help!!

Chemistry

2 answers:

Nitella [24]3 years ago

4 0

I'm pretty sure it's the entertainment industry.

Rufina [12.5K]3 years ago

4 0

Answer:

The correct answer is D. The industry that was created when people suddenly had more time and money available is the entertainment industry.

Explanation:

It is called entertainment industry or showbusiness to the set of companies and institutions whose main economic activity is the production of culture with a profit purpose.

There can be considered means of cultural production: the television, the radio, the newspapers and magazines, the cinema, the videogames, the publishers, theater, dance and music.

All these means are elaborated looking at the same time to increase the consumption of cultural objects, and to modify the social habits, educate or inform.

You might be interested in

What is the element found in Group 17 Period 4?

faust18 [17]

Answer:

Bromine is found in Group 17, Period 4 on the periodic table.

3 0

3 years ago

What is the empirical formula of a compound containing 5.03 grams carbon, 0.42 grams hydrogen, and 44.5 grams chlorine?

PtichkaEL [24]

Answer:

The right choice is CHCl₃

Explanation:

To find the empirical formula firstly, change the mass to moles.

For Carbon :

no. of moles = (mass / molar mass) = (5.03 g / 12 g/mol )= 0.42 mol

For Hydrogen :

no. of moles = (mass / molar mass) = (0.42 g / 1 g/mol )= 0.42 mol

For Chlorine :

no. of moles = (mass / molar mass) = (44.5 g / 35.5 g/mol )= 1.25 mol

The ratio for Carbon and Hydrogen is 1 : 1

0.42 mol / 042 mol =1.00

Then find a ratio between the moles.

The ratio of Chlorine to both Carbon and Hydrogen is 3:1

1.25 mol / 0.42 mol = 2.98 ≅ 3

So the ratio is 1 C : 1 H : 3 Cl.

So, the right choice is CHCl₃

Carbon usually forms four bonds one to Hydrogen and 3 to Chlorine atoms.

Chlorine usually forms one bond to Carbon atom.

Hydrogen usually forms one bond Carbon atom.

4 0

3 years ago

Read 2 more answers

The temperature of a 10g sample of iron was raised by 25.4ᵒC with the addition of 114 J

Sidana [21]

Answer:

28956J

Explanation:

Specific heat capacity is equal to mass × heat capacity × temperature change

Shc = mCtheta

= 10 × 114 ×25.4

= 28956J

5 0

3 years ago

8. [06.02]

Kruka [31]

Answer:

Exothermic reaction

Explanation:

Consider the reaction

A + B ⟶ C

If energy is released, the product C is at a lower potential energy level than the reactants A and B (see diagram).

Conversely, the reactants A and B are at a higher energy level than the product.

B is wrong. In an endothermic reaction, the reactants A and B are at a lower energy level than the product.

C and D are both wrong. Both types of reaction can be exo- or endothermic.

8 0

3 years ago

in which portion of the electromagnetic spectrum is the maximum intensity of the earth outgoing radiation

S_A_V [24]

Infrared is the region in the electromagnetic spectrum to which the maximum intensity of the earth's outgoing radiation.

To explain why it falls on the infrared region of the electromagnetic spectrum, it must be noted that solar radiation powers the climate system of the earth. Some of these are reflected by the Earth and its atmosphere. Now, the earth does not contain the sun's energy from within its vicinity. It gives off infrared radiation through its surface to maintain its internal temperature.

4 0

3 years ago