Answers by Bojian Zheng
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Answers by Bojian Zheng

Answers by Bojian Zheng
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How much thermal energy does it take to raise the temperature of 2.5 kg of plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ/(kg.°C)
answered Feb 22, 2022
10 votes
117k views
How many kg of salt would you need to add to make 3 dm3 of a 600 g/dm3 salt solution?
answered Feb 22, 2022
5 votes
39.3k views
Jacob had 15 apples and gave 10 to his brother. If he had 21 apples and wanted to give the same percentage to his brother, how many apples should he get?
answered Feb 17, 2022
11 votes
105k views
What’s number 1 need help ASAP it’s pass due
answered Dec 24, 2021
3 votes
233k views
Two polygons that can be mistaken as similar
answered Jun 5, 2021
3 votes
84.0k views
Write the subject pronoun in Spanish for each subject pronoun in Spanish. Tu hermana__________
answered May 23, 2021
1 vote
32.3k views
Imagine that you have only ever lived in the arctic, and have never seen a swamp or palm trees. Or, imagine you grew up in the desert and have never seen the ocean, or a lake. Now, imagine that you are
answered May 1, 2021
7 votes
16.4k views
What causes tectonic plates to move? A. When the mantle moves, the plates move. B. When the inner core moves, the plates move. C. When the outer core moves, the plates move
answered Apr 22, 2021
5 votes
224k views
What was president Lincoln’s plan to bring the confederate states back in the union
answered Apr 16, 2021
4 votes
101k views
(a+b):a = 7:4 Find a:b
answered Mar 31, 2021
4 votes
234k views
The Germany truck and trailer manufacturer, Schmitz Cargobull, mainly serves customers who are operators of truck or trailer fleets. What sets the company apart is its expertise in telematics (the integrated
answered Mar 25, 2021
5 votes
158k views
Think about your Thanksgiving break. Respond to these three questions in Spanish using the PAST (pretérito) tense. Try to include details. For example, instead of simply writing "I watched a movie" write
answered Mar 17, 2021
5 votes
48.8k views
If water’s density is 1.0 g/mL, then would the perfume be more or less dense than water? Would the perfume float on top or sink to the bottom of the water? Help me out rq!!!!!
answered Mar 9, 2021
3 votes
135k views
Judaism was founded in a region called Israel, which is shown on the map at letter A. B. C. D.
answered Feb 15, 2021
2 votes
75.5k views
Look at the proof showing sin^4 x = 3 - 4 cos 2x + cos 4x / 8. Which expression will complete the fourth step of the proof ?
answered Nov 23, 2020
2 votes
34.3k views
Suppose 1.00 L of a gas with \gamma γ = 1.30, initially at 273 K and 1.00 atm, is suddenly compressed adiabatically to half its initial volume. If the gas is then cooled to 273 K at constant pressure,
answered Oct 25, 2020
1 vote
104k views
3) 6n– 7n – 5m?n – 7n + 2m + 6mn - 7n + 2m + 6m?n How do you simplify this expression by combining like terms?
answered Sep 22, 2020
4 votes
86.1k views
Tommy mows lawns and cleans pools during the summer he earns $20 per line and nine dollars per pool he needs $1500 to buy a car from his friend Tommy plans to mow 41 months this summer how many pools messy
answered Mar 4, 2020
1 vote
64.8k views
Help me please Julie is asking her friends to name their favorite brand of running shoe. Julie is collecting what kind of data? A) bivariate B) categorical C) quantitative D) univariate
answered Feb 27, 2020
2 votes
142k views
Which of the following is a monomial? c2 + c + 6 c2 − 16 −8c c3 + 4c2 − 12c + 7
answered Feb 27, 2020
5 votes
110k views
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