Determine how are elements and compounds are related
Determine how are Elements and compounds, protons, electrons, , Neutrons, mass number and Atomic number, radioactive and the Isotopes are related under the structure and the bonding sub topics?
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Ascorbic acid, Vitamin C is a water-soluble vitamin. At 55 C a solution having the 80.5 g of ascorbic acid dissolved in the 210 g of water has a density of 1.22 g/ml.
Determine number of bacteria present in culture after7 hours. Determine time that it takes culture to grow to20 times its initial size.
If Epsom salt, MgSO4, H2O, is heated to 250degrees C, all the water of hydration is lost.0.824g of MgSO4remains, on heating a 1.687-g sample of the hydrate. Determine how many molecules of water occur the pure formula unit of MgSO4?
Calculate a 95% confidence level for the difference in means of the two treatment tand select the best answer below. Assume that the independent random samples were taken from normal distributions and that the two population variances are equal.
What distinguishes raw scores from difference scores besides the fact that difference scores are used in t-statistic for repeated-measures research design?
Calculate if the heat of solution is endothermic and exothermic from the magnitude of the lattice energy and the hydration energy and vice versa and define the difference among the hydration energy and lattice energy.
At last, mix of no Dumbium, 4 cc of Sillium, 3 cc of Deludium and 4 cc of Ignorium weighed 41.2 gms. Provided all this find weight of pure Deludium per cc, correct to nearest tenth of a gm/cc?
In a titration the following data were collected. A 10. mL portion of an unknown monophonic acid solution was titrated with the 1.0 M NaOH; 40.mL of the base were needed to neutralize the sample.
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