2. _Sn + _NaOH→_NaSnO2 + _H2

3._H2SO4 + _NaCN " _HCN + _Na2SO4

What happens to the motion of the atoms in a spoon after is placed in hot soup?

Which of the following best describes a Bronsted-Lowry acid-base reaction? O A Acid + conjugate acid = base + conjugate base O B Acid + conjugate base = base + conjugate acid O c Acid + base = conjugate base + conjugate acid O Acid + base =

Biphenyl, C 12 H 10, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C 6 H 6. C6H6. At 25 ∘ C, 25 ∘C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made from dissolving 19.0 g 19.

A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the statements (A-D) is false? A) The partial pressure exerted by the vapor molecules is called the vapor pressure of the liquid.

How is the ionization energy trend in the group

How many joules of heat are needed to raise the temperature of 1.5 g of aluminum at 45°C, if the specific heat of aluminum is 0.75 J/g°C? Group of answer choices

Which is the best predictor of the radioactive nature of an isotope? (A) the proton-to-electron ratio (B) the neutron-to-proton ratio (C) the neutron-to-electron (D) ratio the electron-to-proton ratio

Which of the following statements correctly describes the relationship between fossils and rock strata? Fossils found in the rock strata are all the very small in size. Fossils are all found only in the top layers of the rock strata.

The trend for ionization energy is a general increase from left to right across a period. However, magnesium (Mg) is found to have a higher first ionization energy value than aluminum (Al).

A man is about to receive a bone marrow transplant. He is taking pills to suppress his immune system so that: A. his immune system does not attack the transplanted marrow. B. his immune system can recover after surgery. C.