Given the balanced equation representing a reaction:

2CO (g) + O2 (g) 2CO2 (g)

What is the mole ratio of CO (g) to CO2 (g) in this reaction?

(1) 1:1 (3) 2:1

(2) 1:2 (4) 3:2

Hypothesis: Explain the relationship between forward and reverse reactions at equilibrium and predict how changing the amount of a reactant or product (creating a stress) will affect that relationship.

In the reaction K2CrO4 (aq) + PbCl2 (aq) 2KCl (aq) + PbCrO4 (s), how many grams of PbCrO4 will precipitate out from the reaction between 25.0 milliliters of 3.0 M K2CrO4 in an excess of PbCl2?

Suppose an aqueous mixture is prepared containing magnesium sulfate (mgso4), copper (ii) sulfate (cuso4), metallic magnesium, and metallic copper. what reaction, if any, will occur?

What color would a bromocresol green solution be at ph=7?

Which of the following is an example of a scientific inference? Bubbles formed when the two liquids were mixed together. When the powder was mixed into the water, the temperature increased.

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?

According to the periodic table, which element has an atomic number of 40? a. u b. ca c. zr d. np

3. Which word best fits with the Earth's day and night cycle a. Revolution b. Rotation C Orbit d. Axis