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pickupchik [31]
3 years ago
11

Choose all the answers that apply.

Chemistry
1 answer:
Stolb23 [73]3 years ago
6 0

Answer:

the first statement

Explanation:

hope this helps

please like and Mark as brainliest

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A 20.0 g piece of a metal is heated and place into a calorimeter containing 250.0 g of water initially at 25.0 oC. The final tem
BartSMP [9]

Answer:

Q_{metal} = -6799\,J

Explanation:

By the First Law of Thermodynamics, the piece of metal and water reaches thermal equilibrium when water receives heat from the piece of metal. Then:

Q_{metal} = - Q_{w}

Q_{metal} = m_{w} \cdot c_{p,w}\cdot (T_{1}-T_{2})

Q_{metal} = (250\,g)\cdot \left(4.184\,\frac{J}{g\cdot ^{\textdegree}C} \right)\cdot (25\,^{\textdegree}C - 31.5\,^{\textdegree}C)

Q_{metal} = -6799\,J

6 0
3 years ago
Read 2 more answers
Help pls I will mark brainlest​
defon

Resources found in lithosphere: gold and iron etc

Resources found in atmosphere: Water vapor, gases etc.

4 0
2 years ago
Referring to the experiment in which the scientists studies how long it
pshichka [43]

Answer:

different sizes of the parachute

Explanation:

this is what is being changed throughout the experiment

4 0
3 years ago
Which statement is part of the 3R rule?
makvit [3.9K]

Answer:

The 3R rule states that Radial cracks form a Right angle on the Reverse side of the force. This rule enables an examiner to determine readily the side on which a window or pane of glass was broken.

I hope it's helpful!

7 0
3 years ago
What Is Modern Methods Of Agriculture Practices And its Advantages?
Olin [163]

Answer:

Explanation:

Modern Agriculture - The agricultural practices with modern technique like Fertilizers, Innovative hybrid seed, and utilization of machine call modern Agriculture.

Advantages -

Feeding to the population without scarcity of food grains.

Optimum Utilization of land (Crop intensity more then 300%)

Increased production of food grain.

Global Market - even our mangoes available at US and we are getting California apple too.

Due to factories and Machine use this industry is growing to and empowering good employment.

I hope this helps you :)

7 0
3 years ago
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