Answer:
340 grams Ca₃P₂ (2 sig. figs.)
Explanation:
3Ca + 2P => Ca₃P₂
5.6 mole + excess => ? grams
Convert the 'known' to a coefficient of 1 by dividing all coefficients by 3.
=> Ca + 2/3P => 1/3Ca₃P₂
From the above, 1 mole of Ca => 1/3 mole Ca₃P₂
∴ 5.6 mole Ca in an excess of P => 1/3(5.6 mole) Ca₃P₂
=> 1.8666 mol Ca₃P₂ (calculator answer) ≅ 1.9 mol Ca₃P₂
=> 1.9 mole x 182 g Ca₃P₂/mol Ca₃P₂ = 339.73333 grams Ca₃P₂
≅ 340 grams Ca₃P₂ (2 sig. figs.)
The correct option is; SUGAR DISSOLVING IN WARM WATER.
There are two types of change in chemistry; physical and chemical changes.
A physical change is a type of change in which no new substance is formed while a chemical change is a type of change in which a new substance is formed.
Dissolving sugar in warm water is a physical change because no new substance is formed and the sugar can easily be recovered from the water by evaporating the water.
Hola!
→ Your query:
Atoms of one element easily changes to atoms of another element. Is it True? or False?
→ The answer is: TRUE
→ Reason :
We can change atom of one element to other atom by adding more particles into them. ex : Neutron, Protons and Electrons.
This is how nuclear fusion works.
hope it helps!
Answer:
babe where are u???????!
Explanation:
babe plz text me im lowkey freaking out rn
Answer:
Third option
Explanation:
The answer is the third option or "Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis." Photosynthesis is the process plants use to obtain their own food. Humans do depend on photosynthesis because not only humans eat plants, but animals. Some animals are herbivores which means they only eat plants. If plants cannot create their own food using photosynthesis, then the plant dies. Neither the human nor the animal can eat that plant.
Many animals rely on plants to eat and if all plants cannot perform photosynthesis, then the animals cannot eat. Us humans eat animals which means if the plants die, the animals who eat the plants die, and then humans die. Humans heavily rely on photosynthesis, so the answer is the third option.
Hope this helps.
