When a substance changes from any state of matter to another it is called?

How many water molecules are in a 0.369 g sample? answer in units of molecules?

Q82. Liquid petrol does not ignite spontaneously when exposed to the air because

What is the molarity of the dilute solution when each of the following solution related to the given final volume? (a) 1.00 L of a 0.250-M solution of Fe (NO3) 3 is diluted to a final volume of 2.00L (b) 0.5000 L of a 0.

Mass box A = 10 grams; Mass box B = 5 grams; Mass box C-made of one A and one B How much A and B would be needed to produce 30 grams of C? g of A; g of B.

What type of hybridization is needed to explain why ethyne, C2H2, is linear?

How does the shape of the Earth affect the climate of different regions?

What is Delta. Gsystem for the system that is described by the following data? Delta. Hsystem = - 345 kJ, T = 293 K, Delta. Ssystem = 465 J/K Delta. Gsystem = Delta. Hsystem - TDelta. Ssystem - 481 kJ - 209 kJ 413 kJ 135,900 kJ

Calculate ΔGrxn for this equation, rounding your answer to the nearest whole number. CaCO3 (s) → CaO (s) + CO2 (g) ΔGf, CaCO3 = - 1,128.76 kJ/mol ΔGf, CaO = - 604.17 kJ/mol ΔGf, CO2 = - 394.4 kJ/mol

Using two spring scales, students pull on opposite sides of a dynamic cart at rest. 5 Newtons of force is pulling left and 5 newtons force is pulling right. Describe the motion of the cart? A) The cart will move to the right.

If a mineral has a metallic shine to it, which property of a mineral is being measured