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A copper wire (density = 8.96 g/cm3) has a diameter of 0.50 mm. If a sample of this copper wire has a mass of 48 g, how long is the wire?
What is the oxidation number of chlorine atom in Clo- c)What is the oxidation number of manganese in MnO2
Compute the ratio of the concentration of H 2 CO 3 to that of the HCO 3- if The pH of a bicarbonate-carbonic acid buffer is 8.50
A solution is created by adding 0.05 moles of H2CO3 (3.1 g, total mass) to 5-L of water, resulting in a pH of 4.2. Now, we add sodium hydroxide (NaOH, strong base) until the pH reaches 7. You can neglect any changes in volume. What is the alkalini..
(i) Arrange the following compounds in the order of increasing melting points: (a) He, (b) NH3, (c) LiBr, (d) Ar, (e) CsBr, (f) PH3, (g) CsI, and (h) RbBr. (ii) Separately, also arrange these compounds in the order of increasing boiling points.
platinum crystallizes with a face-centered cubic unit cell. the radius of a platinum atom is 139 pm. calculate the
When a 8.26-g sample of gaseous hydrogen bromide dissolves in 36.2 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 25.00 oC to 71.53 oC. Calculate H in kJ/mol HBr for the solution process.
Identify the cation and anion. Express the answer in terms of the formula of the salt. A green powder dissolves in water and gives a pure white precipitate with acidic AgNO3. When the solution is heated with H2O2 and NaOH, it turns a yellow color,..
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
To the organic chemist, mass spectrometry is especially useful in the determination of the structure of a new compound because it provides information about
Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K. Please provide answer in J
Of the list below, which of the following compunds will have the lowest boiling point and which of the compound will have the highest boiling point?
when 50. grams of ethane gas is burned completely in oxygen. carbon dioxide and water vapor are produce. how many
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