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Effectus [21]
2 years ago
6

3. Calculate the mass in grams of 2.75 moles of Copper.

Chemistry
1 answer:
hichkok12 [17]2 years ago
3 0

Answer: 174.6g

Explanation:

Number of Moles= mass/molar mass

Therefore mass= Number of moles x molar mass

Molar mass of copper= 63.5g/mol

Number of moles= 2.75mol

Mass= 63.5 x 2.75

Mass=174.6g

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The phrase "Most ecosystems are solar powered" refers to the fact that most organisms seek sunlight. solar energy is converted t
Savatey [412]

Answer:

The solar energy is converted to chemical energy by the process of photosynthesis - This is the true statement of the given question.

Explanation:

An ecosystem usually refers to the biological community comprising all the types of living species that are continuously interacting with the surrounding environment. Most of these ecosystems are solar-powered, and by this phrase, it means that there occurs the transformation of energy from solar to chemical energy which is taking place due to the process of photosynthesis. Both the terrestrial and the aquatic, are able to carry out this process in the presence of sunlight, water, and CO₂, and in return, it liberates food and oxygen into the ecosystem.

Thus, this statement satisfies the given phrase.

All other options are false as it does not justify the phrase.

5 0
3 years ago
A shorter electromagnetic wave is _____.
EleoNora [17]
The correct answer is hotter
7 0
2 years ago
Acetylsalicylic acid (C9H8O4) is a monoprotic acid commonly known as aspirin. A typical aspirin tablet, however, contains only a
pashok25 [27]

Answer:

6 grains

Explanation:

The equation of the reaction between NaOH and aspirin is;

C9H8O4(aq) + NaOH (aq) ------>C9H7O4Na(aq) + H2O(l)

Amount of NaOH reacted = concentration × volume = 0.1466 M × 14.40/1000 L = 2.11 × 10^-3 moles

Given that aspirin and NaOH react in a mole ratio of 1:1 from the balanced reaction equation above, the number of moles of aspirin reacted is 2.11 × 10^-3 moles

Hence mass of aspirin reacted = 2.11 × 10^-3 moles × 180.2 g/mol = 0.38 g

If 1 grain = 0.0648 g

x grains = 0.38 g

x= 0.38 g/0.0648 g

x= 6 grains

3 0
3 years ago
Transpiration is the process by which ____.<br>​
saul85 [17]

Answer:

Plants add water to the atmosphere

Explanation:

3 0
3 years ago
Read 2 more answers
.What threatens the newly hatched chicks?
marysya [2.9K]

Answer:

rats. that's all i know of Just about everything except the mother hen if they are natural hatch. Even when you incubate them there are threats. The healthy chicks will mob the weak ones, the older chicks (even by a day) will pick on the younger ones. Temperature extremes will threaten them as they need warm, humid conditions with gradual drops in surrounding temps in the brooder box. Early disease is sometimes a problem and all chicks should be started on medicated chick feed for the first few weeks to prevent several digestive diseases. Even the water dispenser can be a threat as newly hatched chicks will immerse themselves in an open water container so care should be taken to supply water in a self feeding covered dish.

Explanation:

3 0
2 years ago
Read 2 more answers
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