Below are experimental steps that have been rearranged study it carefully and answer the following questions. 1.sodium hydrogen carbonate is added to the solution.
2.sucrose is poured into the test tube.
3.the mixture of acid and sucrose is heated.
4. the mixture is reheated
4. fehling solution is added to the mixture.
4. HCL is added to the solution.
i. state the aim of the experiment.
ii. what was the essence of the addition of sodium hydrogen carbonate?
III. what would be observed at the end of the experiment.
iv. draw a diagram to illustrate the experiment above.

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .

The nationalists army held a higher advantage because of the ammount of men in the army. outnumbered them up to 3 over 1.

Answer

it is the minimum amount of material needed to sustain a fission reaction.

explanation

critical mass is the minimum amount of fissionable material that must be assembled for a sustained fission reaction to take place. although two to three neutrons are produced for every fission, not all of these neutrons are available for continuing the fission reaction. if the conditions are such that the neutrons are lost at a faster rate than they are formed by fission, the chain reaction will not be self-sustaining.   at the point where the chain reaction can become self-sustaining, this is referred to as critical mass.

Answer : option b) two grams of hydrogen react with one gram of oxygen to form two grams of water.explanation :

the equation for synthesis of water is as follows;

here two moles of hydrogen are used with one mole of oxygen which gives one molecule of water as a product. but shana misinterpreted 2 moles as 2 grams in this equation.