An elements what is its row in the periodic table

What volume of ethanol (density = 0.7893 g/cm3) should be added to 450. ml of water in order to have a solution that freezes at â15.0°c? (for water, kf = 1.86 °c/m.) ?

What is the volume of 0.05 mol of neón gas at STL

4.05 kg + 567.95 g + 100.1 g add the correct value using the correct sig figs and or least precise degree of precision. When i did least degree of precision i got 4718.

Classify each of the following as an exothermic or an endothermic reaction: a. C3H8 (g) + O2 (g) → CO2 (g) + H2O (g) + 2220 kj b. 2 Na (s) + Cl2 (g) → 2 NaCl (s) + 819 kj c. PCl5 (g) + 67kj → PCl3 (g) + Cl2 (g)

How do you find the molar mass of calcium carbonate?

Which of the following is the correct name for the compound hgs? mercury sulfide mercury (i) sulfide mercury (ii) sulfide mercury monosulfide?

Which of these has the most impact on the apparent brightness of a star seen from Earth? Gravitational pull, temperature of star, distance from earth, earths orbital pattern

What are 6 abiotic factos from finding nemo?

Which of the following is an element? a. carbon monoxide gas (co) b. magnesium chloride salt (mgcl) c. hydrochloric acid (hcl) d. zinc metal (zn)

Describe the formation of an aqueous KI solution when KI dissolves in water