The ph of a solution is changed from ph 6 to ph 10. does this reflect an increase or decrease in [h+]?

Predict the molar volume of hydrochloric acid required to produce 55 mol of hydrogen gas at STP. A) 0.045 mol/L B) 3.7 M C) 8.9 mol/L D) 15 L

If 1.9 kJ of heat is transferred to 96 g aluminum at 113°C, what would the new temperature of the aluminum be? (The specific heat capacity of aluminum is 0.897 J/g °C.)

The mechanisms of most common reactions consist of two or more elementary steps, each of which describes a single molecular event. True or false?

Why there is a dip in electronegativity for the elements Mn and Zn?

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

How many of the following elements have 2 unpaired electrons in the ground state? C Te Hf Si A) 1. B) 2. C) 3. D) 4.

Which has a higher frequency, a neutron or electron? Why?

1) Identify the intensive properties of a sample of matter: A. mass B. hardness C. color D. volume E. reflectivity

Suppose you have a buffer containing 0.400 M hydrazine and 0.300 M hydrazinium chloride at equilibrium. Then you add 25.2 g of NaOH to 2.0 L of the buffer. What change in pH is caused by the addition of the base? A) 0.99 B) 0.40 C) 8.71 D) - 0.36

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O