1. What is the gram formula mass of Ca (OH),?

(1) 29g

(3) 56 g

(2) 34 9

(4) 74 g

Which definition is correct? A. A physical change creates a new substance because bonds are broken or formed B. A chemical change occurs when the substance remains the same but the shape, or other physical characteristics change C.

Which of the following changes to a system WILL NOT result in an increase in the system's pressure? a. Decreasing the volume of the system b. Increasing the volume of the system c. Raising the temperature of the system d.

How much boiling water at 100 ∘c must you add to this beaker so that the final temperature of the mixture will be 77 ∘c?

41Ca decays by electron capture. The product of this reaction undergoes alpha decay. What is the product of this second decay reaction? 41Ca decays by electron capture. The product of this reaction undergoes alpha decay.

This is urgent! Does the element Francium have a smell or taste?

What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 31 km/h and the coefficient of static friction between the tires and the road is 0.29?

At a certain temperature, 0.4011 mol of N 2 and 1.501 mol of H 2 are placed in a 3.00 L container. N 2 (g) + 3 H 2 (g) - ⇀ ↽ - 2 NH 3 (g) At equilibrium, 0.1801 mol of N 2 is present. Calculate the equilibrium constant, K c. K c =

How many moles of N are in 0.203 g of N2O?

Given the unbalanced equation: al + cuso4 - - > al2 (so4) 3 + cu. when properly balanced, the sum of the balancing coefficients is select one: a. 7 b. 6 c. 9 d. 8

A particle that has a negative charge is called