Which statement is a correct expression of the law of conservation of mass?
a.
th...
![subject](/tpl/images/cats/fizika.png)
Which statement is a correct expression of the law of conservation of mass?
a.
the total mass is unpredictable in a chemical reaction.
b.
the total mass remains the same during a chemical reaction.
c.
the total mass decreases during a chemical reaction.
d.
the total mass increases in a chemical reaction.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 19:30
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 20:20
Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 21:50
Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:50
Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 02:00
![question](/tpl/images/cats/en.png)
English, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 09.02.2021 02:00
![question](/tpl/images/cats/mkx.png)
Arts, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 02:00
![question](/tpl/images/cats/ekonomika.png)
Business, 09.02.2021 02:00
![question](/tpl/images/cats/biologiya.png)
Biology, 09.02.2021 02:00
![question](/tpl/images/cats/mat.png)
Mathematics, 09.02.2021 02:00