Convert 49 L of H_(2)O to grams (Multi-Step Conversion) Answer

Calculate enthalpy of the following reaction from the given bond enthalpies CH_(4(g))+2O_(2(g))arrow 2H_(2)O_((g))+CO_(2(g)) Delta H= __ . KJ Bond & }(c) Bond energy mathrm(E) / mathrm(kJ) mathrm(mol)^-1 & Bond mathrm(E) / mathrm(kJ) mathrm(mol)^-1 & Bond energy mathrm(kJ) mathrm(mol)^-1 & Bond Energy mathrm(kJ) mathrm(mol)^-1 & Bond energy mathrm(kJ) mathrm(mol)^-1 mathrm(C)-mathrm(H) & 414 & mathrm(C)-mathrm(O) & 358 & mathrm(C)=mathrm(O) & 730 mathrm(O)-mathrm(O) & 145 & mathrm(O)=mathrm(O) & 502 & mathrm(O)-mathrm(H) & 464 mathrm(H)-mathrm(H) & 435 & & & &

What is the is the approximate pH of acetic acid? A 7 B 12 C 3 D 0

Use the drop-dowr menus to label each of the following changes P for physical change and C for chemical change. square The substance changes to a new substance. square The original substance can be recovered. square The color changes. square Gas is produced and given off. square The substance changes size, shape, or volume.

An atom has the electron-dot symbol shown below. If this atom Is a main group element, what charge will It form in its IonIc state? dot (X) Multiple Choice -1 -3 -5 -3 -5

Consider the structure of HNO_(2) Part: 0/4 Part 1 of 4 What is the molecular shape about the nitrogen atom? Select the single best answer. T-shaped seesaw trigonal bipyramidal trigonal pyramidal square pyramidal octahedral trigonal planar square planar linear bent tetrahedral

Classify the following reaction: 2KClO_(3)(s)arrow 3O_(2)(g)+2KCl(s)

Consider the reaction H_(2)(g)+I_(2)(g)Leftrightarrow HI(g) with an equilibrium constant of 46.3 and a reaction quotient of 525.Which direction will the system shift to? The equilibrium will shift to the left to favor the reactants. The equilibrium will shift to the right to favor the products. The equilibrium will not shift in any direction. The equilibrium will shift to the forward reaction.

What best describes what the pH number indicates about a solution? A. What the K_(a) constant is B. How acidic the solution is C. What its ionic strength is D. How strong the acid is

Where do the two noteworthy peaks of carboxylic acids appear in 'HNMR spectra? A Between 10 and 12 ppm for the OH proton and 2-2.5 ppm for the protons on the a carbon to the carboxy group. B Between 6 and 9 ppm for the OH proton and 2-2.5 ppm for the protons on the a carbon to the carboxy group. C Between 10 and 12 ppm for the OH proton and 1-1.5 ppm for the protons on the a carbon to the carboxy group. D Between 6 and 9 ppm for the OH proton and 1-1.5 ppm for the protons on the a carbon to the carboxygroup.

Hot Questions

Intermolecular forces hold atoms and molecules in place in a solid. True False

What did Boyle discover about fire? It transforms one chemical into another. It creates good conditions for chemical experiments. It needs air to exist. Its temperature is determined by the substances being burned.

Outer electrons are referred to as __ electrons. scatter free roaming target

Phosphorus reacts with iodine as shown in the chemical reaction below.What is the percent yield of the reaction if 28.2 g $Pl_{3}$ is obtained from the reaction of 48.0 g of 12 with excess phosphorus? $2P(s)+3I_{2}(s)\rightarrow 2PI_{3}(s)$ 51.7 g 51.48 51.5 g None of the above 51.98

Select the pair that has the larger atom or ion listed first. $Br^{-},Se^{2-}$ $S,S^{2-}$ $Cl,Cl^{-}$ $F^{-},Ne$ $P,P^{3-}$

What information do you need to look at on the SDS? There is 1 correct answer. Look at Section 2 - Hazards Look at Section 3 Composition / Information on Ingredients Look at Section 4 - First Aid Measures Look at Section 5 - Fire-Fighting Measures Look at Section 6 - Accidental Release Measures

Breaking bonds is hydrolysis. is dehydration synthesis. stores energy. is endergonic.

Which statements are true regarding reaction rates'[Select all that apply.] Larger activation energies are associated with faster reaction rates. Higher reactant concentrations are associated with faster reaction rates. Reducing the activation energy for a reaction increases its reaction rate. Reaction rates depend on how likely molecules are to collide in the correct orientation to react. Reactions that give off heat occur rapidly. Reactions that absorb heat occur rapidly. Large changes in enthalpy are associated with fast reaction rates. At high temperatures molecules are more likely to collide with enough energy to initiate a reaction. Two molecules must collide with one another to react.

If 5.00 g of gray iron powder reacts with 2.38 g of red phosphorus powder, what is the mass of the iron phosphide product? $\square $

How many oxygen molecules do we need to produce four molecules of water? a) 4 b) 2 C) 3 d) 1