Questions by Gustavo Bezerra

Questions by Gustavo Bezerra

When elemental iron corrodes it combines with oxygen in the air to ultimately form red brown iron(iii) oxide which we call rust. (a) if a shiny iron nail with an initial mass of 23.2 g is weighed after

asked Jul 20, 2018

1 answer

4 votes

33.8k views

Which pair of expressions is equivalent using the Associative Property of Multiplication? A. 4(2a ⋅ 5) = (4 ⋅ 2a) ⋅ 5 B. 4(2a ⋅ 5) = 8a ⋅ 20 C. 4(2a ⋅ 5) = (2a ⋅ 5) ⋅ 4 D.4(2a ⋅ 5) = 4 ⋅ 2a ⋅ 5

asked Jul 4, 2018

2 answers

0 votes

35.7k views

The combustion of 14 grams of CO according to the reaction CO(g) + ½O2(g) CO2(g) + 67.6 kcal gives off how much heat? Remember to use significant digit rules. 6,716 kcal 1,514 kcal 34 kcal 135 kcal none

asked Sep 27, 2017

2 answers

2 votes

56.8k views

Which of the following atoms would be considered an ion

asked Aug 23, 2017

1 answer

5 votes

79.9k views

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