Question and answer
In a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom? A. It lost electrons and was oxidized. B. It lost electrons and was reduced. C. It gained
electrons and was oxidized. D. It gained electrons and was reduced.
A. It lost electrons and was oxidized
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User: In a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom? A. It lost electrons and was oxidized. B. It lost electrons and was reduced. C. It gained electrons and was oxidized. D. It gained electrons and was reduced.

Weegy: A. It lost electrons and was oxidized
mythmoh|Points 5309|

User: In a compound, chemical energy is contained in the A. nuclei of the atoms. B. unbonded electrons. C. bonds. D. movement of the electrons.

Weegy: D. movement of the electrons.
mandyplatinum|Points 31|

User: Which of the following statements is true about what happens during a chemical reaction? A. Bonds of the reactants are broken, and bonds of the products are formed. B. Bonds of the reactants are formed, and bonds of the products are broken. C. The bonds of both the reactants and the products are broken. D. The bonds of both the reactants and the products are formed.

Weegy: A. Bonds of the reactants are broken, and bonds of the products are formed.
vanilla2bean|Points 791|

User: In terms of energy, how would you classify the following chemical reaction? 2Cu + O2 ? 2CuO + 315 kJ A. endothermic B. exothermic C. both endothermic and exothermic D. neither endothermic nor exothermic

Weegy: The correct answer is B. exothermic .
Slayin|Points 743|

User: For the chemical reaction C2H6 + 137 kJ ? C2H4 + H2, the chemical energy of the A. reactant is greater than the chemical energy of the products. B. products is greater than the chemical energy of the reactant. C. reactant and the chemical energy of the products are equal. D. reaction is conserved.

Weegy: D. reaction is conserved.
TonioL|Points 110|

User: For the chemical reaction H2 + CO2 ? H2O + CO, the energy contained in the reactants is 352 kJ, and the energy contained in the products is 394 kJ, assuming 1 mol of each substance is present. Which of the following statements is true? A. 42 kJ is released, and the reaction is exothermic. B. 42 kJ is released, and the reaction is endothermic. C. 42 kJ is absorbed, and the reaction is exothermic. D. 42 kJ is absorbed, and the reaction is endothermic.

User: Reaction rates do NOT tell you how fast A. reactants are being consumed. B. products are being formed. C. substances are changing state. D. energy is being absorbed or released.

Weegy: The answer is D. energy is being absorbed or released.
Expert answered|alfred123|Points 246|

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Asked 8/22/2012 2:22:02 PM
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Weegy: There is no formula, but there is a two-step procedure. I will describe the procedure, and give an example of finding the LCM of 12, 15, [ [ and 25. (1) Find the prime factors of each of the natural numbers. 12 = 2? ? 3 15 = 3 ? 5 25 = 5? (2) Select the largest exponent on each of the prime factors. Multiply these together. 2? ? 3 ? 5? = 300 The LCM of 12, 15, and 25 is 300. ] ] User: Write the numeral as a traditional Chinese numeral. 367 User: Write the numeral as a Hindu-Arabic numeral. ss? User: Write the numeral as a Roman numeral. 503,303 User: Convert the base 10 numeral to a numeral in the base indicated. 503 to base 5 Weegy: 503 base 10 to base 5 is: 4003. [smile] User: 44+11 base 5 User: Determine whether or not the first number is divisible by the second number 775,836; 9 Weegy: Yes User: Find the sum of the terms of the arithmetic sequence. 1, 7, 13, 19, . . ., 109 n = 19 Weegy: Here's a way that is easy to both do and remember. [ When you have the sum of an equally-spaced (finite) sequence of numbers, you can think of this as being similar to finding the area of a triangle. For a triangle, Area = (Base) (Height) / 2 = (Base) (Average Height). If you think of the numbers of the sequence as being similar to the height of a triangle at n evenly spaced points, then the average of the sequence is (1 + 109) / 2 = 55, which corresponds to Height / 2 of the triangle. Likewise, the length of the sequence n = 19 can be thought of as similar to the length of the triangle's base. The equation for the sum can be written as Sum = (n) (average of sequence) = (19) (1 + 109) / 2 = (19) (55) = 1045. Therefore, the correct answer 1045 ] User:(More)
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