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When you are under the water at 3 pm and you look up at the water is the sun going to be lower or higher than it appears?
When you are under the water at 3 pm looking up, the sun will appear higher than it actually is due to the refraction of light as it passes through the water. This phenomenon makes the sun's position seem elevated when viewed from underwater.
How do you find number of atoms in water mole?
In order to go from moles to number of particles in any substance you simply multiply the number of moles by Avagadro's number (6.02 x 10^23). Once you have the number of molecules (in general it's particles), you would multiply the number of molecules by the number of atoms in each molecule. In water there are 3 atoms per molecule (2 hydrogens, 1 oxygen),so you'd mulitply by 3.Summarizing: You have to multiply the number of water moles by Avagadro's number (6.02 x 10^23) and then again by number of atoms per molecule (3).n timesA times 3 = number of atoms in 'x' moles of water
When a solution is diluted does it change the number of moles dissolved?
The number of moles of a solute will not change as a solution is diluted, however, the concentration of the solute will decrease. If you were to evaporate the water from the diluted solution, you would have the same number of moles of solute as when you started. You can test this by comparing the mass of the solute before producing the solution to the mass of the solute after the solution was diluted. The two masses should be the same.
How do you calculate the total number of atoms found in seven molecules of water?
To calculate the total number of atoms in seven molecules of water, you can use the formula: atoms per molecule x number of molecules. In water (H2O), there are 3 atoms per molecule (2 hydrogen atoms and 1 oxygen atom), so for seven molecules, you would have 3 x 7 = 21 atoms.
What is the proton number of the element lithuim?
Lithium has an atomic number of 3.Lithium's atomic mass is 6.9.The atomic number refers to the number of protons in the nucleus of an element. As elements are electronically neutral the atomic number also refers to the number of electrons in a normal atom of that element.The atomic mass is an average and can be said to refer to the combined mass of the protons and neutrons in the nucleus (protons and neutrons both having an atomic mass of 1).Lithium, therefore, has 3 protons, 3 electrons and 4 neutrons (on average).Lithium is in group 1 which means it is an alkali metal.Being in group 1 also means that Lithium has only one electron in its outer shell.Alkali metals are highly reactive because they only need to get rid of one electron in an ionic bond in order to have a full outer shell. As one travels down the periodic table the number of electron shells increase and so too does the distance an outer electron is from the nucleus. This increase in distance means the nucleus' hold on the outer electrons is diminished and thus the element will give up its outer electrons easier. This, in turn makes the alkali metals further down the table more reactive than those higher up.Alkali metals are so called because when they react with water they form an alkali. Lithium reacting with water will form lithium hydroxide.Lithium is a metal with a relatively low density that floats on water and will react violently with water and discolour rapidly in air.
Osmosis always involves what?
Osmosis refers to the flow of water along the water potential through a selectively/differentially permeable membrane/tubing due to a difference in water potential. Thus, it always involves 1) a selectively/differentially permeable membrane 2) difference in water potential(related to concentration gradient) 3)flow of water.
What does 2 over 3 in fractions?
2 over 3 is a number. It has no potential to DO anything.
How do you subtract a negative number from a positive number?
you subtract the numbers then he higher number to start out with is the awnser. example: negative 3 - positive 7= 3-7=4 the higher number is 7 so i is positive. the final answer is positive 4
How do you divide a low number with a higher number?
If the question is 2 divided by 3 you get a fraction or a decimal. the answer is 3/4 or .75.
What is some examples of gravitational potential energy?
Any object that is higher than ground level in earth's gravitational field has potential energy stored in it. Examples: 1. A plane or bird in the sky 2. A parachutist 3. Water stored in a dam, or water tanks at some height above earth's surface 4. A satellite orbiting Earth
What are three ways for material to move in and out of cells?
3 ways of transport:Active transport - this is when the cell uses energy to move the substance across a partailly permeable membrane. This ususally needs to be done when it is working against a concentration gradient or water potential. For example, a root hair cell may use active transport to take up water, as there is a higher water potential inside the cell than there is outside.Diffusion/Passive transport - This is when the substance moves across a partially permeable membrane down a concentration gradient or water potential. This method takes no energy.Osmosis - This is the movement of WATER down a water potential across a partially permeable membrane. This uses no energy. When talking about water, use this term.
Which number is lower than 3 plus 6 and higher than 3 plus 4?
8
If one number is a factor of another number will the greatest common factor will be the lesser number. explain?
If one number is a factor of another number, the greatest common factor will be the lesser number. Example: 3 and 9 3 is a factor of 9 3 is a factor of 3 There can be no higher factor of a number than the number itself. Therefore, the GCF of 3 and 9 is 3.
What is a number that is higher then 12 and lower then 40 and has exactly 3 factors?
30
What is a number higher than 10 that is not divisible by 3 4 or 5?
11
What is the probability of rolling a number higher than 4?
There are six faces, and only three faces with a number higher than a four. So it is 3 chances in 6.
When you are under the water at 3 pm and you look up at the water is the sun going to be lower or higher than it appears?
When you are under the water at 3 pm looking up, the sun will appear higher than it actually is due to the refraction of light as it passes through the water. This phenomenon makes the sun's position seem elevated when viewed from underwater.
