(a) Water (b) Air (c) Ammonia (d) Methane Mixtures In chemistry, a mixture is defined as the combination of two or more substances. The substances must retain their individual chemical identities in order for the combination to be considered a mixture. For example,...
Which one of the following is not classified correctly? a. Air is a solution. b. Distilled water is a compound. c. Table salt (sodium chloride) is a mixture. d. Gold is an element. e. Salad dressing i Which of the following would be an ...
9. Potassium is present in all cells and plays a role in the function of nerves and the heart. 10. Sodium is similar in function to potassium, playing a role in nerve and muscle functions. 11. Sulfur plays a role in bu...
These compounds possess potent cytotoxic activity which is developed after the hydrolysis of the ester or glycoside group of the compound and are effective in the inhibition of tumor cells and bacterial growth after activation.John H. Kenten
High levels of Nitrogen can discourage bud development and add an unpleasant taste to buds. The too-high levels of Nitrogen is why a general-purpose plant nutrient isn’t a good choice in the flowering stage. When to start giving flowering nutrients: Start using bloom nutrients after buds ...
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b. wine c. steam d. oxygen e. vegetable soup Pure substances: Pure substances are made from only one type of particles and a constant structure. The properties or the chemical composition of the pure substances remain the same throughout...
a. water b. carbon dioxide c. carbon d. air Pure Substance: Pure substances are made of definite atomic or molecular units with unique chemical properties. A mixture, on the other hand, is made up of at least two chemically different structural units and usually, ...
Lithium hydroxide, like sodium hydroxide, becomes contaminated when exposed to air. What is the source of this contamination? What reactions take place? 1) Methanol and toluene are flammable liquids whose vapor pressures at 68 F (20 ^oC) are...
2. A compound of the formula I as claimed in claim 1, in which Sacch denotes fructosyl or 1-deoxyfructopyranos-1-yl; A denotes Ile, Leu, Val, Cys or Hhp, wherein each residue is in the D form; B denotes Asp, Asx, Glu or Ser, wherein each residue is in the L- or D-...