Answer:
1. False
2. True
3. True
4. True
5. True
6. True
7. True
8. False
9. True
Explanation:
Density is a physical property since its measurement does not involve any chemical process.
Since transition elements exhibit variable oxidation states, the actual oxidation state of the transition element must be specified in the compound.
Due to the fact that neutron has no charge, it was discovered by Chadwick long after the electron and proton were discovered.
The balancing of chemical reaction equations is a demonstration that atoms are neither created no destroyed. It also shows that mass is neither created nor destroyed in chemical reactions.
When a gas is heated, it expands. Its volume and its kinetic energy increases. Since volume and pressure are inversely proportional (Boyle's law) the pressure decreases.
Enthalpy is said to be an extensive property. This implies that the magnitude of change in enthalpy is known to depend on the amount of reactants that is actually reacted.
The combined gas law is applicable to all ideal gas systems irrespective of their individual chemical formulas.
10g of CO2 contains 0.227 moles of CO2 while 10g of NO contains 0.33 moles of NO hence 10.0 g of NO will contain more molecules than 10.0g of CO2.
If a sample is not at absolute zero, the particles are known to possess kinetic energy which decreases continuously until absolute zero is attained.
True for DNA only:
- Contains the nucleotide deoxythymidine monophosphate.
True for RNA only:
- Is involved in the process of protein synthesis in the cytoplasm of the cells in the liver.
True for both DNA and RNA:
- Contains the base adenine.
- Is synthesized by a process that involves base pairing.
True neither for DNA nor RNA:
- Is an inherently directional molecule, with an NN-terminus on one end and a CC-terminus on the other end.
- Occurs only in single-stranded form.
Some facts:
DNA known as Deoxyribonucleic acid acts as the genetic material of all living organism except for some viruses. It stores the genetic information of an organic life form. DNA has deoxyribose sugar and is a double stranded helix.
RNA or Ribonucleic acid can be genetic or non genetic material. It functions in transferring the genetic information stored in DNA during protein synthesis and in control of gene expression.RNA also have enzyme activity in the form ribozyme and it is the genetic material of some viruses and virioids.
In a fully inflated basketball, there are more particles of gas.
Answer: Option D.
<u>Explanation:</u>
When a ball is fully inflated, it means it has a lot of air in it. With a lot of air in it, it means that there a lot of gas particles in that ball. With the large amount of gas particles in it, there is a lot of collision among these particles inside the ball.
This collision leads to the pressure on the greater side compared to the ball which has less air in it and is deflated because it has less particles of gas inside.
Hydrogen and oxygen will have completely new properties
Answer:
The answer to your question is letter E. 288.4 g/mol
Explanation:
Data
Number of carbons = 19
mass percent of carbon = 79.12
molar mass = ?
Process
1.- Calculate the molar mass of 19 atoms of carbon
Atomic mass of carbon = 12 g
Atomic mass of 19 atoms of carbon = 228 g
2.- Use proportions to calculate the mass of testosterone
228 g --------------- 79.12 %
x -------------- 100 %
x = (228 x 100) / 79.12
Simplify
x = 22800 / 79.12
Molar mass of testosterone = 288.2 g
