What is mole?

Q: Why is it necessary to use a small diameter, thin-walled capillary for holding the sample in the…

A: Solution:

Q: How many moles of KI are in 9.06×10^24 formula units?

A: nmoles=NNAvagadro

Q: For divers going to great depths, the composition of the air in the tank must be modified. The ideal…

A:

Q: When wax is coated on clothes , they become water proof. Why?

A: When there is no wax, adhesive force between cloth and water molecules is stronger than the cohesive…

Q: Which element is needed and absorbed normally by your body when you are breathing?

A: Oxygen is brought into the lungs by breathing, where it is transported by red blood cells to the…

Q: Is it a cause of worry when your body temperature is 310K?

A: The average body temperature of human being ranges from 36.5°C to 37.5°C. Any temperature below 35°C…

Q: How about an oxygen molecule?

A:

Q: 12. Seawater has ɛ, = 80. Its susceptibility is (a) 81 (b) 79 (c) 5.162 x 1010 F/m (d) 7.074 × 10-1º…

A: Susceptibility is a dimensionless quantity used for dielectrics, which gives an idea about the…

Q: name of the substance?

A:

Q: If no molecule in a body can escape, would body have any odor?

A: The odour is due to molecular diffusion, hence if the molecule could escape, the body will have…

Q: Do you find the idea that you are made of recycled atoms disturbing? Why or why not?

A: We are made of atoms that were formed on other starts and distributed across the universe.

Q: How many moles of atoms are present in 1 mole of water?

A:

Q: is amber and rabbit fur negatively charged

A: Basically anything in this universe is electrically neutral. i.e the sum of negative charge and…

Q: What is a blood pressure monitor and how does it work?

A: Blood pressure monitor device is used to measure blood pressure. Blood pressure monitor is also…

Q: A person contains 8.0 L of blood. Blood is composed of 55% plasma and 45% blood cells by volume. The…

A: (a) It is given that blood is composed of 55% of plasma by volume. The volume of plasma in 8L of…

Q: What is Snell's law?

A: Light ray deviates from expected path as it moves from one medium to another. Snell’s law gives the…

Q: How to balance this equation:   C2H6S + N2O5 = CO2 + H2O + N2O + S2O

A:

Q: What makes up ozone?

A: Most of the ozone is found in upper atmosphere(Stratosphere). One ozone molecule is consist of three…

Q: In 12.0 g of carbon, there are NA = 6.02 x 10^23 carbon atoms (Avogadro’s number). If you could…

A: Given: The value of Avogadro's number is 6.02x1023 atoms. The mass of carbon is 1.00 g. The rate of…

Q: The internal pressure in the bladder is due to the accumulation of the urine. true false

A: The internal pressure in bladder is due to urine. True or false

Q: Relation between hypoxia and CKD

A: Hypoxia: Hypoxia is disease which occurs when body have not enough oxygen. It is very dangerous…

Q: The effect of nitric oxide on blood vessels is to:

A: Nitric oxide works as a vasodilator, which means the presence of nitric oxide relaxes the inner…

Q: Air, CO2, some plastics, water, and hand sanitizer are all transparent materials. Yet you can tell…

A: any object when interacts with light the following four phenomena can occur: 1.Specular Reflection:…

Q: Which contains the most moles: 10.0 gg of hydrogen gas, 100 gg of carbon, or 500 gg of lead?

A: Let M be the mass of the element, Mmol be the molar mass of element.Write the expression for the…

Q: Spherical particles of a protein of density 1.7 g/cm3 are shaken up in a solution of 20°C water. The…

A: It is given that, ρp=1.7 g/cm3=1700 kg/m3T=20oCt=1 hr=3600 sh=7.4 cm=0.074 m

Q: What is electric cell?

A: Introduction: Electricity is generated by the flow of charges which are electrons. When electrons…

Q: Enercise:- A. diame tenrile deformatio a allowable allowable bel amory Malar Alua Bom Tit

A:

Q: Spherical particles of a protein of density 1.8 g/cm3 are shaken up in a solution of 20°C water. The…

A: Given:Density of spherical particle of protein (ρ) = 1.8 g/cm3.Solution can stand for time (t) = 1.0…

Q: describe in detail why and in what situation you use mgh=1/2kx^2, and the question (why it is…

A: mgh = (1/2) kx2 where m is the mass g is the acceleration due to gravity h is the maximum height k…

Q: What are physical changes of matter

A: To define: Physical changes of matter

Q: Qll The prodeet of the two influehces Choose the answe H BT At 2/8^A^ t.

A: It is the commutative property of operater

Q: If no molecules in a body could escape, would the body have any odor?

A:

Q: How many grams are in 5.60 x 1024 molecules of NaCI?

A: Given that                        The Molecules of the NaCl is (n) = 5.6×1024 molecules We need to…

Q: How can nanotechnology be used in the prevention and treatment of illnesses?

A: By using nanotechnology, scientists prevent illness, more quick diagnose processes , control disease…

Q: how many grams are in 2.70 x 10^24 molecules of P^4

A:

Q: The common Eastern mole, a mammal, typically has a mass of 75 g, which corresponds to about 7.5…

A:

Q: What is the mass of 0.75 moles of (NH4)3PO4? O 111.75 g O 121.75 g O 131.75 g O 101.75 g

A:

Q: What is a mixture? Give three examples?

A: The mixtures are formed by mixing the two or more substances with each other without combining…

Q: Discuss why equal masses of golf balls and Ping-Pong balls don’t contain the same number of balls.

A: Ping-Pong balls have a lower mass when compared to the golf ball. The mass of the atoms and…

Q: When does an object have a store of GPE?

A: Given:When does an object have a store of gravitational potential energy,(GPE)Now,An object having…

Q: density of platinum is 21.45 x 103 kg/m3. a. Calculate the volume (in m3/atom) occ

A: density= mass/volume

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!