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3 years ago

What are two observations you made from viewing the solar system model?

Chemistry

1 answer:

oksian1 [2.3K]3 years ago

3 0

Answer:

The two observations we made from viewing the solar system model are as follows as:

1). When we look at the sky we observe that the motions of all the planets and the stars are perfect circular movements with a good and high speed, but not in velocity because in velocity direction doesn't charges.

2). The sun is at the centre of our solar system and all the planets are equidistant to each other planets and also revolve around the sun.

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Could someone help me with all of these questions. Also plz if you don't know the answer plz don't put something that isn't righ

densk [106]

Q3.) acidic
q4.)that the solution is acidic
q5.)that the solution is alkaline

3 0

4 years ago

The equation of 3times x is 38

MrMuchimi

Answer is 38/3 or 12.67

3x=38

x=38/3

therefore answer is the one mentioned above

4 0

3 years ago

Is Fe(OH)3 acid or base?

alex41 [277]

Answer:

ACID

Explanation:

5 0

3 years ago

"Reduce, reuse, recycle." Give examples of how one or more of

Anarel [89]

Answer:

Examples of how the ideas can be applied to the issues and practices of hydraulic fracturing for the acquisition of shale gas are;

Reuse; The produced water in obtained from oil and gas well production are reused for fracking, drilling, and if the water is good enough, it can be used for farming

Reduce; The use of recycled brine and water in drilling and fracking process reduces the application of freshwater in the those processes and reduces pollution of natural water sources

Recycle; Recycling involves creating products from waste. In the hydraulic fracturing process approximately 13 percent of the water produced and the flowback water are recycled to be used more than once thereby reducing the net consumption of freshwater

Explanation:

In hydraulic fracturing, also known informally as fracking, is the drilling method used in oil and gas well development process that makes use of water sand and chemical injection through the well bore to open and widen cracks in the bedrock formations in the areas around the wellbore.

6 0

3 years ago

The molecular weight of an organic compound was determined by measuring the freezing point depression of a benzene solution. A 0

Rudiy27

<u>Answer:</u> The molar mass of the sample is 120.6 g/mol

<u>Explanation:</u>

To calculate the depression in freezing point, we use the equation:

$\Delta T_f=iK_fm$

Or,

$\Delta T_f=i\times K_f\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}$

where,

$\Delta T_f$ = depression in freezing point = 0.42°C

i = Vant hoff factor = 1 (For non-electrolytes)

$K_f$ = molal freezing point elevation constant = 5.065°C/m

$m_{solute}$ = Given mass of solute (sample) = 0.500 g

$M_{solute}$ = Molar mass of solute (sample) = ? g/mol

$W_{solvent}$ = Mass of solvent (benzene) = 50.0 g

Putting values in above equation, we get:

$0.42^oC=1\times 5.065^oC/m\times \frac{0.500\times 1000}{M_{solute}\times 50.0}\\\\M_{solute}=\frac{1\times 5.065\times 0.500\times 1000}{50.0\times 0.42}=120.6g/mol$

Hence, the molar mass of the sample is 120.6 g/mol

5 0

4 years ago