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3 years ago

How has overpopulation changed the rule about recycling and use of resources

Chemistry

2 answers:

Lynna [10]3 years ago

8 0

Answer:

Explanation:

Overpopulation changed the rule about the recycling and use of resources because we have limited resources on our planet. For fulfillment of the needs of all the population, we are paying attention toward recycling and limiting the use of fresh resources. Now a days we are heading towards sustainable development. In sustainable development we use our resources without exploiting them so that our future generation would also use them.

snow_tiger [21]3 years ago

3 0

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Balance this equation- Fe + O2 Fe3 O4

kherson [118]

3Fe + 2O2 —- Fe3 + O4

7 0

2 years ago

C + O2 = CO2

geniusboy [140]

Answer:

44 grams of CO₂ will be formed.

Explanation:

The balanced reaction is:

C + O₂ → CO₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

C: 1 mole
O₂: 1 mole
CO₂: 1 mole

Being the molar mass of each compound:

C: 12 g/mole
O₂: 32 g/mole
CO₂: 44 g/mole

By stoichiometry the following mass quantities participate in the reaction:

C: 1 mole* 12 g/mole= 12 g
O₂: 1 mole* 32 g/mole= 32 g
CO₂: 1 mole* 44 g/mole= 44 g

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

If 12 grams of C react, by stoichiometry 32 grams of O₂ react. But you have 40 grams of O₂. Since more mass of O₂ is available than is necessary to react with 12 grams of C, carbon C is the limiting reagent.

Then by stoichiometry of the reaction, you can see that 12 grams of C form 44 grams of CO₂.

44 grams of CO₂ will be formed.

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3 years ago

1. How many moles are contained in 103.4g of sulfuric acid?

sdas [7]

It is b I hope this helps

6 0

3 years ago

Explain examples of a physical and chemical change of matter

monitta

HEY DEAR..

PHYSICAL CHANGE

Those Changes in which no new substances are formed are called physical changes. it is a temporary changes which can be reversed easily to form the original substance.

Example:- Melting of ice , Making a solution, Glowing of an electric bulb , freezing of water etc.

CHEMICAL CHANGE

Those changes in which new substances are formed are called chemical changes. it means it is permanent changes which are usually irreversible.

Example:- Burning of charcoal, fuels and cutting of trees, even digestion of food is in chemical change.

HOPE ITS HELPFULLL

BE BRAINLY.

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3 years ago

Hibernation is _______. A. An example of an abiotic cycle b. Triggered by changes in the weather c. Caused only by biotic factor

natta225 [31]

The correct answer is option b, that is, triggered by changes in the weather.

Hibernation refers to a state of lower metabolism and inactivity usually witnessed in endotherms. This condition is featured by a slow heart rate, slow breathing, low metabolic rate, and low body temperature. It assists the majority of the endotherms to thrive in the cold seasons. For example, hibernation of a bear in winters. Therefore, weather change can stimulate hibernation.

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3 years ago