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Kaylene
Questions (10)
Nathan made a triple bar graph showing the numbers of bronze, silver, and gold medals won by each country in the last Olympics.
1 answer
578 views
Javier makes a double bar graph that shows the number of cats and dogs owned by members of his class. If Javier himself owns one
0 answers
482 views
In her social studies report, Suzanne included a bar graph that showed the populations of different native Americans nations in
0 answers
582 views
Moesha volunteers at the zoo. She prepared a bar graph that shows the number of pounds of food eaten one day, by each animal.
0 answers
503 views
dawn gathered information about the population of each country in her state.if she prepares a bar graph of this data, what
1 answer
415 views
A hurricane is a very powerful storm. It is a cyclonic storm, which means that it has a circular pattern within the hurricane
0 answers
776 views
A hurricane is a very powerful storm. It is a cyclonic storm, which means that it has a circular pattern within the hurricane
0 answers
591 views
Calculate the heat of formation reaction for
SiO2(s)+4HF(g) --> SiF4(g)+2H2O(l) I got -129.6 and it says I'm wrong
1 answer
2,484 views
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday.
5 answers
1,390 views
If 200 ml of gas held at a constant pressure has a starting temperature of 300 degrees K, and it expands to fill a 300 ml space,
1 answer
1,206 views
Answers (2)
What career can I do with this subjects
It's 1.65 x 10^3 kJ. This is what I did for the 1st question: -0.250 kg Fe x 1g Fe/10^3 kg x 1 mol Fe/223.4 g Fe x -1.65 x 10^3 kJ/4 mol Fe = 4.61 x 10^-4 kJ Fe 2nd question: 2.00 x 10^3 kJ Fe2O3 x 2 mol Fe2O3/ -1.65 x 10^3 kJ x 319.4 g Fe2O3/1 mol Fe2O3 =
