Which of the following equations is balanced correctly?

A.

3 H2O → H2 + 3 O2

B.

2 C3H3 + O2 → 2 CO2 + H2O

C.

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

D.

Cl2 + 2 KBr → KCl + Br2

Which project can be used to determine whether a substance is a liquid or plasma

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Which descriptions are true of carbonated drinks? Select all that apply. A. They are solutions. B. They are heterogeneous mixtures. C. They are depositions. D. They are homogeneous mixtures. E. They are suspensions.

What is the volume of 0.30 M NaOH (aq) needed to completely neutralize 15.0 milliliters of 0.80 M HCl (aq) ? (1) 3.6 mL (3) 20. mL (2) 5.6 mL (4) 40. mL

Lead is found in Earth's crust in several different lead ores. Suppose a certain rock is composed of 38.0% PbS (galena), 25.0% PbCO3 (cerussite), and 17.4% PbSO4 (anglesite).

How many liters of water can be made from 55 grams of oxygen gas and an excess of hydrogen at a pressure of 12.4 atm and a temperature of 850 c?

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Which state of matter isn't typically found on earth?

Both black and white road surfaces absorb sunlight. the warmer road surface at the end of a sunny day is the

Which information in the periodic table indicates the number of protons in an atom? A. the position of the element in its column B. the element's chemical symbol C. the element's atomic mass D. the element's atomic number