A. true.
The statement that Eisenhower, Kennedy, and Johnson all approved of the United States backing the South Vietnamese in their civil war is absolutely true. After the communist North Vietnam got her Independence in 1954, there began a civil war in South Vietnam. The communist insurgents backed by North Vietnam turned against the South Vietnam government. So US supplied its soldiers in South Vietnam to suppress the communist insurgents and the move was approved by Eisenhower, Kennedy, and Johnson.
Answer:
Desk
Water
Cloud
Helium
Explanation:
Answer:
Rutherford's atomic model explained how the electrons surrounded the nucleus of protons and neutrons. His model showed how J. J. Thomson's Plum Pudding model was incorrect.
Answer:Rutherford model of an atom shows that an atom is mostly an empty space,with electrons orbiting a fixed positively charged nucleus in set.
Explanation:
Answer:
Applied science is generally engineering, which develops technology, although there might be dialogue between basic science and applied science (research and development). Medical sciences such as medical microbiology are examples of applied sciences.
Explanation:
There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:
Molarity = 0.74 g (1 mol / 74. 55 g) / 500mL (1 L / 1000 mL)
Molarity = 0.02 M
Answer:
0.02 M is the answer
Explanation:
To calculate the number of moles in an experiment, you need to know the mass of the substance and its molecular weight. The number of moles is then found by dividing the mass by the molecular weight. This applies to any substance, including bromobenzene, magnesium, and benzophenone.
To calculate the number of moles of bromobenzene, magnesium, and benzophenone you will use in the experiment, we first need the molecular weights of each substance. The molecular weights determined from experimental data are crucial to this calculation. The number of moles of a compound is equal to the mass of the compound divided by its molecular mass. For example, if we consider a substance like benzene, the molecular formula is C6H6 which is derived from its empirical formula CH, and the ratio of the elements within it. Let's say you have 'm' grams of bromobenzene, 'n' grams of magnesium, and 'p' grams of benzophenone. Also, let the molecular weights of bromobenzene, magnesium, and benzophenone be 'M', 'N', and 'P' respectively. Then the number of moles of bromobenzene would be m/M, of magnesium would be n/N, and of benzophenone would be p/P. To get the exact values, you would need the specific weights of these substances in your experiment. Remember to ensure that the weights are in grams (for mass) and g/mol (for molecular weight) since the number of moles is a dimensionless quantity.
#SPJ11
2. The reactant in excess is any reactant that occurs in a quantity greater than that is required to completely react with the limiting reactant.
3. The amount of product can be calculated based on the amount of limiting reactant.
Answer :
(1) The limiting reactant is the reactant that is completely consumed in a chemical reaction. → True
(2) The reactant in excess is any reactant that occurs in a quantity greater than that is required to completely react with the limiting reactant. → True
(3) The amount of product can be calculated based on the amount of limiting reactant. → True
Explanation :
Excess reagent : It is defined as the reactants not completely used up in the reaction. The given moles are more than the required moles.
Limiting reagent : It is defined as the reactants completely used up in the reaction. The given moles are less than the required moles.
Theoretical yield : It is calculated from the amount of the limiting reagent present in the reaction.
Actual yield : It is experimentally determined.
All the given statements are true.
The limiting reactant is the reactant that is completely consumed in a chemical reaction. The reactant in excess is any reactant that occurs in a quantity greater than that required to completely react with the limiting reactant. The amount of product can be calculated based on the amount of limiting reactant.
1. True. The limiting reactant is the reactant that is completely consumed in a chemical reaction. It determines the amount of product that can be formed.
2. True. The reactant in excess is any reactant that occurs in a quantity greater than that required to completely react with the limiting reactant.
3. True. The amount of product can be calculated based on the amount of limiting reactant using stoichiometry.
#SPJ3