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How do you multiply #(3x2)^2#?

Question #a910e

Question #75b1b

How do the Ka values for weak and strong acids compare?

How are elements classified in the periodic table?

When is the density of water #"1 g/mL"#? How can we measure density?

Where does energy come from in a chemical reaction?

Question #e21bc

Given the reaction:Na2S2O3(aq) + 4Cl2(g) + 5H2O(aq) > 2NaHSO4(aq) + 8HCl(aq),
how many moles of Na2S2O3 are needed to react with 0.12mol of Cl2?

How many moles of #NO_2# are there in #1.81 * 10^24# molecules of #NO_2#?

How do you convert .8333 as a fraction?

What is 32ft/h in yd/day?

Question #e44d4

How much heat is necessary to vaporize 500 g of water at its boiling point?

Question #3266a

How do you measure specific heat?

What is an example of a gas laws practice problem?

How can I find specific heat in thermochemistry of phase of changes?

Question #2b111

Why can't photons be sharply localized?

Question #8dee3

How does an endothermic reaction change the entropy of the surroundings?

Question #06b85

Question #da056

How does changing force or mass affects the acceleration of an object?

How does hydrogen bonding affect the melting point?

An element has 5 protons, 6 neutrons, and 5 electrons. What is the mass number?

What are some examples of acid and base dissociation?

Suppose you are a salesperson for the Acme Dynamite Company. Each month you earn $400 plus one sixth of your sales. What amount must you sell this month to earn more than $3000?

Does an atoms mass number or atomic number ever change?

What is meant by the term “excited state” as it applies to an electron?

You run a 100yd dash in 9.8 seconds. What is your speed in miles per hour?

How many orbitals are in each of the sublevels (s,p,d,f)?

What are examples of strong acids and bases, weak acids and bases, and neutral substances according to the pH scale?

How does the Bohr's model of the atom explain lineemission spectra?

What is the conjugate acid of ClO4?

Can you write and balance the equation for the complete combustion of ethane, #C_2H_6#?

How do you find the average atomic mass?

How do you find the height of a tree if the angle of elevation of its top changes from 20 degrees to 40 degrees as the observer advances 23 meters towards the base?

How do you find the measure of angle B for the triangle with the following dimensions. A = 45° , a = 60.5 , b = 90?

How do you simplify #5^3/5^2#?

Question #88c8e

Why is the Hess' law important in physics?

What does the constant R in the Ideal Gas Law mean?

Question #bfee9

What is the electron configuration of fluorine?

Question #c1a9b

Question #19cbb

How does the process of titration work?

A solid rubber stopper has a mass of #33.0# grams and a volume of #30.0# #cm^3#. What is the density of rubber?

How do you write #0.045# in scientific notation?

Question #bd933

How do you solve a triangle given a=10 b=8 B=130 degrees?

Why does a strong acid have a weak conjugate base, whereas a weak acid has a relatively strong conjugate base?

What makes a strong acid strong?

How would you write the formula for
sodium perchlorate?

A carpenter is building a stairway. The depth of each tread is 10 inches. The height of each riser is 8 inches. What is the steepness (slope) of the stairway?

What is the conjugate base of HSO4?

Where do strong acids and bases fall on the pH scale?

What is the specific heat of a material if a 6.0 g sample absorbs 50 J when it is heated from 30°C to 50°C?

How would you balance the following equation:
Na2CO3 + BaCl2 > NaCl + BaCO3?

How do you solve a triangle given a = 8, c = 12, and B = 72?

How would you identify a limiting reagent in a chemical reaction?

How would you balance the following equation: HCI+NaOH > H2O+NaCI?

Question #f3642

Question #2e118