I need help with b) c) and what is the electronic configuration of atom E

I was interested in science when I first saw a diagram of Solar system in my sister's geography book. At that time I was in Senior Kindergarten and she was in 6th grade. At first, I was just interested in space, universe and black holes stuff, but then as I started learning more, I realised how amazing other branches of science are too. They are so systematic. What encourages me to learn more are the gaps in science, its mysteries, I wish to uncover them one day, and for that I am preparing myself. When I am in a science class, I try to imagine where can I apply this knowledge in my day to day life, and my teachers are fascinated when I ask them if this principle is responsible for this phenomena. I love it very much. I like Physics the most, but other branches are great too.

Answer:

82 °C

Explanation:

Let the specific heat capacity of the coffee be that of water which is 4.2 J/g °C.

Now, at the final temperature, heat gained by Aluminum spoon ,Q equals heat lost by coffee, Q'.

Q = -Q'

Q = m₁c₁(T₂ - T₁) where m₁ = mass of aluminum spoon = 45 g, c₁ = specific heat of aluminum = 0.88 J/g °C, T₁ = initial temperature of aluminum spoon = 24 °C and T₂ = final temperature of aluminum spoon.

Q' = m₂c₂(T₂ - T₃) where m₂ = mass of coffee = 180 g, c₂ = specific heat of coffee = 4.2 J/g °C, T₃ = initial temperature of coffee = 85 °C and T₂ = final temperature of coffee.

So, Q = -Q'

m₁c₁(T₂ - T₁) = -m₂c₂(T₂ - T₃)

Making T₂ subject of the formula, we have

m₁c₁T₂ - m₁c₁T₁ = -m₂c₂T₂ + m₂c₂T₃

m₁c₁T₂ + m₂c₂T₂ =  m₂c₂T₃ + m₁c₁T₁

(m₁c₁ + m₂c₂)T₂ =  m₂c₂T₃ + m₁c₁T₁

T₂ =  (m₂c₂T₃ + m₁c₁T₁)/(m₁c₁ + m₂c₂)

substituting the values of the variables into the equation, we have

T₂ =  (180 g × 4.2 J/g °C × 85 °C + 45 g × 0.88 J/g °C × 24 °C )/(45 g × 0.88 J/g °C  + 180 g × 4.2 J/g °C)

T₂ =  (64260 J + 950.4 J)/(39.6 J/°C  + 756 J/°C)

T₂ =  65210.4 J/795.6 J/°C

T₂ =  81.96 °C

T₂ ≅  82 °C

the universe formed through the big bang explosion, all of the elements on Earth have been cooked for billions of years in stars and then released in the universe through super- nova explosions.

Answer:

The composition of air can be determined by an experiment which includes passing a known volume of air, measured at a known temperature and pressure, over sufficient amount heated copper granules/powder, and measuring the volume gas remaining after the gas cools down to the temperature at which the first measurement was taken

Oxygen reacts with copper according to the following chemical reaction

2Cu (s) + O₂ (g) → 2CuO (s)

Cupper does not react with the other constituents of air

Whereby the initial volume of air was 100 cm³, we have;

Percentage of oxygen in air = 100 - The final volume reading of the container initially holding the air

When done using am appropriate experimental setup, the percentage of gases remaining equals 79% to 80%, therefore, the percentage composition of oxygen in air is between 20 and 21 percent

Explanation:

Answer:

sodium bicarbonate solution

Answer:

Soda all start with watered down corn syrup. To get the carbonation companies have different ways of doing this all of which are very different. The last step is to add artificial and natural flavors like lemon and lime, this is also the step in which sugar and preservatives are added.

Explanation:

I hope this answer your question, srry I couldn't go into detail.

Answer:

Down is the recipe for momo..

Explanation:

recipe..

. Sieve the wheat flour carefully to remove lumps.

. Add water and knead the flour well to prepare a dough

. Remove the skin of the boiled potato ,cut into small pieces

. Heat the cooking oil in frying pan, and fry the pieces of onions cabbage green chili tomato pea etc.

. Prepare a mix veg stuffing by mixing potato other vegetables , green coriander and salt.

. Prepare a small balls of dough and roll it out of belna.

. Put 10 gm of mix vegetables stuff in the center of rolled dough and close it from all the sides to make a small ball.

. steam the momo for 10-15 minutes. After that it will be ready to serve.

. A sauce or pickle is usually eaten with momo.

Answer:

Explanation:

Sieve the wheat flour carefully to remove lumps.

Answer:

C6H12O6+6O2--->6CO2+6H2O

Explanation:

So I went through all the answers and could not find the right one amongst. If I'm not wrong the reaction above is the reaction for respiration. The nearest answer is D but unfortunately the first reactant isn't in accordance with that which the question has given.

The scientific question related to the game of basketball is option D: "Do teams that practice more win more games?"

This question is scientific because it explores a cause-and-effect relationship between practice and game outcomes. It can be investigated through empirical observation and data analysis.

To answer this question, researchers could collect data on the practice hours of different basketball teams and compare them to their corresponding game performance. Statistical analysis could be used to determine if there is a correlation between practice time and winning percentage or other performance metrics.

By examining a large sample of teams over an extended period, researchers could draw conclusions about the impact of practice on game outcomes. This scientific inquiry would contribute to the understanding of the factors that influence team success in basketball and could potentially inform training strategies and coaching techniques.

For more question on basketball

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Answer:

thats pink floyds album cover LOL

but the answer is to prism

hope this helps :)

Answer:

2

5

3

Answer:

Starch solution

Explanation:

Colloidal solutions show tyndall effect and starch solution is a colloidal solution.

Answer:

2.76 gram

Explanation:

2AI + 6HCl → 2AlCl3 + 3H2

Answer

Al +2 HCl - AlCl2 + H2

Utilizing a database search would be most effective for obtaining the data related to registered voters. The Option D.

A database search proves invaluable when seeking to retrieve specific information such as the total number of registered voters in a country. By querying the database with the appropriate parameters, you can efficiently extract accurate and up-to-date voter registration figures.

This method streamlines data collection by ensuring accuracy and reducing the potential for errors associated with manual collection processes.

Read more about database

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Answer:

of what grade it is of??

Explanation:

tell me then ill answer

Answer:

None

Explanation:

Methylene is an organic compound and organic compounds consist of hydrogen atoms and Carbon atoms in n this case Methylene(CH2) has one carbon and two hydrogens .

Answer: methylene doesn't contain CL(chlorine) atoms

Explanation: the chemical formulae for Methylene is CH2

which means it contains only carbon and hydrogen atoms which is 1(one) carbon 2(two)hydrogen atoms

HOPE THIS HELPS!!

which experiment please involve a clip

Answer:

b. stainless steel

Explanation:

b) stainless steel is not good condoctor of heat

Answer:

This is true.

Explanation:

R should be 0.0821

Good luck!

Answer:

Plastic pollution are harmful on land because;

Answer:

A. Nucleotide

Explanation:

Nucleotides are the monomers that make up nucleic acids, such as DNA and RNA.

Answer:

electric balance, goggles, beaker

Explanation:

I did it and got it right

Answer:

36 electrons

Explanation:

But Bromine anion with a charge of -1 has one extra electron so 35 +1 = 36 electrons.

Solution :

Cd(s) ---------------------->  [tex]Cd^{+2}[/tex] (aq) + 2[tex]e^-[/tex]      ,     [tex]E_0[/tex]  =   0.34 v

[tex]Cu^{+2}[/tex]  (aq)  +   2[tex]e^-[/tex]  ------------> Cu (s)             ,     [tex]E_0[/tex]  =  -0.04 v

----------------------------------------------------------------------------------------------

Cd(s)  +  [tex]Cu^{+2}[/tex]  (aq)  ------------->  [tex]Cd^{+2}[/tex] (aq)  +  Cu (s)   ,      [tex]E_0[/tex]  =  0.30 v  

The cell potential is defined as the measure of [tex]\text{ potential difference }[/tex]  between the [tex]\text{two half cells}[/tex] of an electrochemical cell.  

Answer:

a) clockwise

b) clockwise and

c) anticlockwise

Answer:

the group with helium at the top

Explanation:

I just took it

Explanation:

a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

Answer:

Atomic Mass Unit is also called Dalton. It is used to express atomic and molecular weight. It is defined as 1/12 of the mass of an unbound neutral atom of carbon.