a relative density bottle has a mass of 29.2 g when empty its mass is 116.2 g when it is full of liquid or diesel and when full of water it's mass is 129.2 g calculate the relative density of diesel
Answers
Answer:
0.87
Explanation:
Given :
Mass of bottle = 29.2 g
Mass when filled with diesel = 116.2 g
Mass when filled with water = 129.2 g
The mass of water = (Mass when filled with water - mass of bottle)
Mass of water = 129.2 - 29.2 = 100 g
Mass of diesel = (Mass when filled with diesel - mass of bottle)
Mass of diesel = 116.2 - 29.2 = 87
Relative density of diesel = mass of diesel / mass of equal volume of water
Relative density = 87 / 100 = 0.87
Related Questions
A 92.6 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 735 (food) Calories. How high must the person climb? The acceleration due to gravity is 9.8 m/s 2 and 1 food Calorie is 103 calories. Answer in units of km.
A student releases a block of mass m at the top of a slide of height h1. the block moves down the slide and off the end of the table of height h2, landing on the floor a horizontal distance d from the edge of the table. Friction and air resistance are negligible. The overall height H of the setup is determined by the height of the room. Therefore, if h1 is increased, h2 must decrease by the same amount so that the sum h1+h2 remains equal to H. The student wants to adjust h1 and h2 to make d as large as possible.A) 1) Without using equations, explain why making h1 very small would cause d to be small, even though h2 would be very large?2) Without using equations, explain why making h2 very small would cause d to be small, even thoughh1 would be largeB) Derive an equation for d in terms of h1, h2, m, and physical constants as appropriate.
The process by which water diffuses from a region of greater concentration to a region of lesser concentration is called
A stone is dropped from a bridge and hits the pavement below in two seconds. What is the velocity of the stone when it hits the pavement?A. 0.20 m/s B. 19.6 m/s C. 4.9 m/s D. 9.8 m/s
B. The flask would probably feel warmer than before the reaction started.
C. The flask would feel the same as before the reaction started.
D. none of the above
Answers
Answer: A. The flask would probably feel cooler than before the reaction started.
Explanation: An endothermic reaction is a type of of chemical reaction in which energy is absorbed from the surroundings. The temperature of the surrounding decreases.
An Exothermic reaction is a type of of chemical reaction in which energy is released into the surrounding. The temperature of the surrounding increases.
When an endothermic reaction takes place in the flask, the heat is absorbed by the flask and thus the temperature of the surrounding (here the flask) will decrease which can be felt by touching the outside of the test tube. Thus the flask would appear colder.
CCA Unit 3: Heat Energy and Reactions Unit Test Answers
Please keep in mind these are for CHECKING YOUR ANSWERS, not for using as an answer key to cheat!!
1. A
2. C
3. A
4. A
5. C
6. D
7. C
8. C
9. A
10. A
11. C
12. A
13. C
14. C
15. C
16. B
17. D
18. B
19. Q= = mass * specific heat * delta T 343 = 55.0 * specific heat (86.0-19.0) 343=3685 * specific heat specific heat = 0.0931 cal/g Celsius
20. Temperature is absolute while heat is relative. The direction of heat always travels to the warmer temperature of the object to the cooler one.
21. Ke=[C]^2/[A]^3[B}^2
22. A chemical reaction is spontaneous if an increase in the total entropy of the system and surroundings accompanies it.
Example:
4 Fe + 3 O 2 -> Fe 2 O 3
Enjoy guys ;)
annihilate each other?
(1) 1.64 × 10^–13 J (3) 5.47 × 10^–22 J
(2) 8.20 × 10^–14 J (4) 2.73 × 10^–22 J
Answers
Answer:
(1)
Explanation:
Energy released in this process is given by
here we have
since here mass of two electrons converted into energy so we have
so here energy released is the energy of rest mass energy due to two charges i.e. electrons and positrons
The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is 1.64 x 10⁻¹³ J.
What is the minimum total energy released?
The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is calculated as follows;
E = Δmc²
where;
- m is the mass of the two electrons
- c is speed of light
E = (2 x 9.11 x 10⁻³¹) x (3 x 10⁸)²
E = 1.64 x 10⁻¹³ J
Learn more about energy here: brainly.com/question/25959744
#SPJ5
Answers
First object: KE = (1/2) (2 kg) (2m/s)² = 4 joules during the lift.
Second object: KE = (1/2) (4kg) (3 m/s)² = 18 joules during the lift.
The second object has more kinetic energy while it's being lifted
than the first object has while it's being lifted. Once they reach their
final heights and stop, neither object has any kinetic energy.
Answers
Answers
Answer:
12 A
Explanation:
Voltage, V = 120 V
Resistance, R 10 ohm
By using ohm's law
V = i x R
where, i is the current
i = V / R
i = 120 / 10
i = 12 A
thus, the current is 12 A.
Answers
= 600 / 3
Power = 200 Watt
Answer: 200 W
Explanation:
In physics, power is defined as the amount of work done divided by the time taken to do that work:
where W is the work done and t is the time.
In this problem, the work done is W=600 J, while the time taken is t=3 s. Substituting into the formula, we find the power: