What kind of reaction is decribed by the following chemical

equation?

2A1 + Fe2O3 + Al2O3 + 2Fe

Select one:

•Decomposition

•Single Replacement

•Synthesis

•Double Replacement

•Combustion

Which of the following is not a form of energy? O A) light OB) pressure OC) heat OD) electricity

The distance between sn atoms in tin metal is 2.82 å. (a) what is the atomic radius of a tin atom in this environment

Question 8 1 pts What is the difference between a cell wall and a cell membrane? The cell wall produces food, the cell membrane breaks down the food to release energy The cell wall blocks substances from leaving the cell membrane allows materials

1. identify whether following have ionic or covalent bonding. Give your reasons: Oxygen molecule, water, calcium oxide, hydrogen oxide, sodium chloride, hydrogen chloride, magnesium fluoride, ammonia, sulphur dioxide 2.

A common isotope of iron (Fe) has an atomic number of 26 and a mass number of 56. The total number of subatomic particles in the nucleus is: * 26

Na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels. na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels. a. True b. False

How many protons does one atom of sulfur have

Which shows the electron configuration for zinc (Zn) ? [Kr]5s24d10 [Kr]5s24d6 [Ar]4s23d9 [Ar]4s23d10

What is the oxidation number of chromium in the ionic compound ammonium dichromate (nh4) 2cr2o7?

Draw an ecosystem with 10 biotic and 5 abiotic factor