B) the two atoms sharing electrons are equally electronegative. C) the two atoms sharing electrons are of the same element. D) it is between two atoms that are both very strong electron acceptors. E) the two atoms sharing electrons are different elements. 9) The ionic bond of sodium chloride is formed when A) chlorine gains an electron from sodium.
A) gas B) solid C) salts D) ice E) liquid 3. A small amount of salt dissolved in water is an example of a __________. A) compound B) solid C) heterogeneous mixture D) pure substance E) homogeneous mixture 4. Which of the following is an illustration of the law of constant composition? A) Water is 11% hydrogen and 89% oxygen by mass.
We can represent one pair of shared electrons in a covalently bond by a line, Cl- Cl. In a double bond four electrons are shared. The two atoms in an oxygen molecule share two pairs of electrons so that the oxygen atoms have a double bond between them. We can represent the two pairs of shared electrons in a covalent bond by a double line, O=O. [pic] How does Sharing electrons hold atoms together?
6. Zinc Sheet: a rectangular, thin, sheet like metal, gray/silver. 6 5 4 3 2 1 * Solubility of solid iodine; 1. Solid iodine in 1 mL of water is slightly soluble, because the solution turns into a light brown/yellow color. However majority of the solid Iodine was left at the bottom of the test tube; which leads to the conclusion that it’s not reactive on water.
It has a medium heat yeild and the burn difficulty is easy. It is hard to split. It produces light smoke and no spark. It produces 19.1 million btu's per cord. I found that cherry has a good rating for burning.
Calculate the equilibrium constant, Ke. [0.85] 4. If the equilibrium concentration of F2(g) is 1.50 mol/L and H2(g) is 2.5 mol/L, determine the concentration of HF(g) at equilibrium. [1.92 mol/L] F2 (g) + H2 (g) === 2 HF(g) Ke = 0.98 5. If 0.100 mol of hydrogen iodide is placed in a 1.0 L container and allowed to reach equilibrium, find the concentrations of all reactants and products at equilibrium.
This is because when an azeotrope is boiled, the resulting vapour has the same ratio of constituents as the original mixture of liquids. Each azeotrope has a characteristic boiling point. The boiling point of an azeotrope is either less than the boiling points of any of its constituents (a positive azeotrope), or greater than the boiling point of any of its constituents (a negative azeotrope). The azeotropes of cyclohexanol/water and cyclohexene/water are both positive azeotropes. The separation of cyclohexene could not depend on distillation alone.
What is the weight percent of each element in ammonium sulfate? C. Empirical and Molecular Formulas 1. Empirical Formula - shows the number of atoms in the smallest possible ratio a. may be calculated from percent composition data b. may or may not show the true number of atoms of each kind in the molecule 2. Molecular Formula - shows the true
(1 point for each molecule) The central atom is C. 2. How many atoms are bonded to the central atom? (1 point for each molecule) There are two atoms bonded to the central atom. 3. How many lone pairs of electrons are on the central atom?
One of the increasingly popular types of gasification is Plasma Gasification. Plasma gasification technology has been shown to be the most effective and environmentally friendly method for solid waste treatment and energy utilisation. It is a non-incineration thermal process that uses extremely high temperatures in a partial oxygen environment to decompose completely the input waste material into very simple molecules. The products of the process are a fuel or gas known as synthesis gas and an inert vitreous material known as slag (Stehlı´k, 2009). Plasma gasification uses an external heat source to gasify the waste, resulting in very little combustion.