If you needed copper, which mineral would you prefer to mine: chalcopyrite or bornite?

Ira is working in a lab with unknown solution.when he inserts the electrical conductivity tester in the unknown,the bulb begins

Mamont248 [21]

Electrical conductivity tester.

If the bulb begins to glow brightly when the plug is submerged in the unknown solution then the solution has high conductivity.

The bright glow of the bulb resulting from the experiment indicates that the current flows easily through the unknown liquid.

7 0

3 years ago

The earth is surrounded by a _______________________ of gases called the ________________. The atmosphere is very ______________

deff fn [24]

The earth is surrounded by a layer of gases called the atmosphere. The atmosphere is very important to life on Earth and does many things to help protect life and help life to survive.

The atmosphere absorbs the heat from the Sun and keeps the heat inside the atmosphere helping the Earth to stay warm, called the Greenhouse Effect.

7 0

3 years ago

"What are the structures of chromosomes that cause traits?" use CER

UNO [17]

Dog dog dog dog dog dog dog dog dog dog dog

7 0

3 years ago

2. When diffusion has reached equilibrium, we say that

madam [21]

Answer:

See Below.

Explanation:

The key word here is net. The net movement has reached zero when a system is in equilibrium but there are still motion's going back and forth due to statistics and just random brownian motion.

Think of it this way, if there are 100 people walking forwards in a crowd but 2 are moving against the crowd, the net movement is still forwards because the bulk of people are going in that direction. However, there are still 2 people moving against.

Same here, if we are talking about a diffusion, let's say in the case of osmosis, if most of the solute is moving across a membrane then we'd say its net direction is that way but that doesn't mean that there aren't processes happening in the other direction. Water molecules in osmosis mostly diffuse, chemically speaking (because you can say this biologically in a different way), from the probability of water molecules colliding with each other and passing the membrane so even if there is a net movement in a certain way their random motion can make them go to the other side just as well. If the fact that motion stops at equilibrium were the case a lot of systems, both chemical and biological, would not exist as we know it.

Think net = bulk NOT total or entire.

8 0

3 years ago

What are the differences between a chromosome and a DNA molecule

statuscvo [17]

A chromosome is a piece of protein that is inside a cell's Nucleus that contains genetic information. DNA is inside the chromosome, which gives the chromosome the genetic information

3 0

3 years ago