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beti
Questions and answers by visitors named
beti
Questions (14)
A 30.5 g sample of an alloy at 90.7�C is placed into 48.8 g water at 22.3�C in an insulated coffee cup. The heat capacity of
2 answers
557 views
When 20.0 mL of 0.535 M H2SO4 is added to 20.0 mL of 1.07 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises
2 answers
667 views
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and
3 answers
1,836 views
If 100.0mL water of at 50.0C is added to 100.0 mL of water at 20.0C. What temperature would
the mixture of water reach? Assume
4 answers
2,286 views
A chemistry professor has a cup of coffee containing 50.0mL of room temperature coffee at
25.0C. The professor also has a new pot
4 answers
1,326 views
wo cars approach each other on a straight, level highway. Car A travels at 60 km/h and car B at 80 km/h. The driver of car B
2 answers
725 views
he x-component of a velocity vector that has an angle of 44∘ to the +x-axis has a magnitude of 4.3m/s . What is the magnetude
2 answers
956 views
If the vertical initial speed of the ball is 4.0m/s as the cannon moves horizontally at a speed of 0.70m/s , how far from the
1 answer
455 views
A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h
1 answer
543 views
A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h
2 answers
606 views
If the vertical initial speed of the ball is 4.0m/s as the cannon moves horizontally at a speed of 0.70m/s , how far from the
2 answers
514 views
f the vertical initial speed of the ball is 4.0m/s as the cannon moves horizontally at a speed of 0.70m/s , how far from the
1 answer
466 views
ssume all temperatures to be exact.
A 0.240-kg coffee cup at 27∘C is filled with 0.200kg of brewed coffee at 96∘C. The cup
2 answers
687 views
The admission fee at an amusement park is $1.50 for children and $4 for adults. On a certain day, 292 people entered the park,
2 answers
711 views
