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3 years ago

D 6) Select True or False.

Chemistry

2 answers:

Mama L [17]3 years ago

6 0

Answer:

true

Explanation:

Lisa [10]3 years ago

6 0

Answer:

False

Explanation:

Since when did Solar flares can affect how machines on Earth work that is negitive they have never affected how our machines work

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Which element has an electron configuration of [Kr]5s2

nydimaria [60]

Element name = strontium

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3 years ago

Wastewater discharged into a stream by a sugar refinery contains 3.40 g of sucrose (C12H22O11) per liter. A government-industry

Ipatiy [6.2K]

Answer: The pressure that must be applied to the apparatus is 0.239 atm

Explanation:

To calculate the osmotic pressure, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

or,

$\pi=i\times \frac{m_{solute}}{M_{solute}\times V_{solution}\text{ (in L)}}}\times RT$

where,

$\pi$ = osmotic pressure of the solution

i = Van't hoff factor = 1 (for non-electrolytes)

$m_{solute}$ = mass of sucrose = 3.40 g

$M_{solute}$ = molar mass of sucrose = 342.3 g/mol

$V_{solution}$ = Volume of solution = 1 L

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = temperature of the solution = $20^oC=[20+273]K=293K$

Putting values in above equation, we get:

$\pi =1\times \frac{3.40g}{342.3g/mol\times 1}\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 293K\\\\\pi =0.239atm$

Hence, the pressure that must be applied to the apparatus is 0.239 atm

3 0

3 years ago

How much energy is generated from freezing 2.5 g water

zvonat [6]

200 calories.
Explanation:
The (latent) heat of fusion of a material, is either one of:
1) the heat required to melt the material without
temperature change or
2) the heat removed from the material to freeze it
without temperature change.
For water this latent heat is 80 cal/g. Multiply this by
2.5 g to get 200 cal.

6 0

2 years ago

0.0009547863= x^-1.644

Andrej [43]

Answer: 68.71317831

Explanation:

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3 years ago

Which would be the biggest long-term benefit of building a city recycling center? A. building the new recycling building

igor_vitrenko [27]

C. reducing the amount of garbage

Explanation:

The biggest long-term benefit of building a city's recycling building is that it helps to reduce that amount of garbage.

Recycling is simply the collection and processing of waste materials into new products that can be used again.

Waste recycling helps to reduce that actual proportion and percentage of materials to be considered waste.
The overall long term goal of any recycling procedure is to reduce the amount of garbage in the environment.

learn more:

Untreated wastes brainly.com/question/4080706

#learnwithBrainly

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3 years ago