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For which reaction is ?rxn equal to ?Hf for CuSO₄(s)? A. Cu₂+(aq) + SO₄ 2-(aq) ---> CuSO₄(s) B. CuO(s) + SO₃(g) ---> CuSO₄(s) C. CuS(s) + 2 O₂(g) ---> CuSO₄(s) D. Cu(s) + S(s) + 2 O₂(g) ---> CuSO₄(s)
answered
Nov 15, 2024
Chemistry
high-school
3
votes
159k
views
What is 4 3/5 of 45?
answered
Aug 25, 2024
Mathematics
college
2
votes
212k
views
A 20-kg object travels 3 blocks south, 20 blocks west, and 1 block north to arrive at its destination. How far did the object travel? a) 17 blocks b) 30 blocks c) 16 blocks d) 24 blocks
answered
Apr 17, 2024
Physics
high-school
4
votes
228k
views
What is the purpose of “Green” building? a. To get federal funding c. To recycle building materials b. To create a harmonious relationship with the environment d. To lower energy bills
answered
Jan 1, 2024
Computers and Technology
high-school
4
votes
141k
views
PLSSSSS ANSWER PRETTY PLSSSSS Select the correct answer. Which of the following teaching tools would be appropriate for a high school chemistry course? A. telescopes B. posters with inspirational quotes
answered
Sep 5, 2023
English
high-school
6
votes
20.5k
views
At a certain time of day, a 30-foot building casts a 10 foot shadow. How tall is a person who casts a 2 foot shadow? A. 4 feet B. 5 feet C. 6 feet D. 7 feet
answered
Aug 29, 2023
Mathematics
middle-school
9
votes
46.6k
views
Find the value of 18-n n=8
answered
Jun 15, 2023
Mathematics
high-school
7
votes
178k
views
Someone please help me with this: Write a research-based argumentative essay for or against health care for everyone.
answered
Apr 3, 2023
English
high-school
3
votes
190k
views
CAN SOMEONE HELP ME REALLY QUICK if a punch bottle says it contains 20% fruit, and it is a 200-milliliter bottle, how many milliliters of fruit juice is in the bottle A) 40 milliliters B) 200 milliliters
answered
Mar 27, 2023
Mathematics
high-school
6
votes
58.7k
views
a window washer cleaned 42 windows and 4 hours at this rate how many windows will he wash in 10 hours
answered
Jan 23, 2023
Mathematics
high-school
5
votes
83.8k
views
A boat went downstream and traveled a distance in 3 hours. the return took 3 hours and 40 min. find the speed of the water current of the speed of the boat in still water is 18
answered
Dec 24, 2022
Mathematics
middle-school
5
votes
117k
views
Find the value of x in each diagram.
answered
Jul 23, 2022
Mathematics
college
4
votes
41.7k
views
Please help me If all wavelengths of light on the electromagnetic spectrum are released by objects in space (stars, quasars, etc.), why aren’t we constantly bombarded by harmful waves like x-rays and gamma
answered
Jun 11, 2022
Chemistry
middle-school
2
votes
177k
views
Patterns of inheritance are usually more complicated than what is predicted by Mendelian genetics. Explain four possible exceptions to Mendelian genetics involving the inheritance patterns of a single
answered
Jun 11, 2022
Biology
high-school
13
votes
45.4k
views
How did the judicial branch under Jefferson serve as a check on the executive and legislative branch
answered
May 18, 2022
History
high-school
4
votes
119k
views
A triangle has two sides that measure 5 cm and 7 cm. Which of the following CANNOT be the measure of the third side? A 3 cm B 5 cm C 7 cm D 12cm
answered
May 9, 2022
Mathematics
college
12
votes
233k
views
Write down the length of the diameter of the circle
answered
Mar 26, 2022
Mathematics
college
6
votes
86.1k
views
Find the measure of the indicated angle in each triangle, to the nearest degree.
answered
Feb 26, 2022
Mathematics
high-school
1
vote
119k
views
5 Ethos about food or candy (examples)
answered
Jan 6, 2022
English
high-school
0
votes
75.0k
views
72% of the students in Math 6th at AZVA are currently passing mastering their lessons. If 324 students are currently mastering their Math lessions, how many students are in Math 6th? a) Use a percent equation
answered
Dec 17, 2021
Mathematics
middle-school
7
votes
14.8k
views
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