Homework Answers
Change 1--. It is a physical change.. because the change form the initial state come form the rotation of the molecule which is allowed.
Change -2 -- it is a chemical change beacuse the molecule break into its component . example - dissociation of water (H2O ) to its component hydrogen (H2) and oxygen (O2) ..
Change--3 -- this change is impossible because if in the intial state only two atom are present that is red white and if it's . thoroughly isolated then the yellow color atom will don't have any probability to mixed up with this molecule and form a new molecule...
So change 1 --is physical change . Change 2-- chemical change . Change 3--- impossible
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There are four sketches below. The first sketch shows a sample of Substance X. The three...
There are four sketches below. The first sketch shows a sample of Substance X. The three...
There are four sketches below. The first sketch shows a sample
of Substance X. The three sketches underneath it show three
different changes to the sample. You must decide whether each of
these changes is possible. If a change is possible, you must also
decide whether it is a physical change or a chemical change.
Each sketch is drawn as if the sample were under a microscope so
powerful that individual atoms could be seen. Also, you should
assume that...
There are four sketches below. The first sketch shows a sample of Substance X. The three...
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change. Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should assume that...
help, please! There are four sketches below. The first sketch shows a sample of Substance X....
help, please!
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change. Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should...
There sets of sketches below, showing the same pure molecular compound (water, molecular formula H_2 O)...
There sets of sketches below, showing the same pure molecular compound (water, molecular formula H_2 O) at three different temperatures. The sketches are drawn as if a sample of water were under a microscope so powerful that individual atoms could be seen. Only one sketch in each set is correct. Use the slider to choose the correct sketch in each set. You may need the following information: melting point of H_2 O: 0.0 degree C boiling point of H_2 O:...
There are three sets of sketches below, showing the same pure molecular compound (sulfur dioxide, molecular...
There are three sets of sketches below, showing the same pure molecular compound (sulfur dioxide, molecular formula SO,) at three different temperatures. The sketches are drawn as if a sample of sulfur dioxide were under a microscope so powerful that individual atoms could be seen. Only one sketch in each set is correct. Use the slider to choose the correct sketch in each set. You may need the following information: En melting point of SO2: -72.0°C boiling point of SO,:...
There are no formulas within this problem. The problem wants me to set the slides to...
There are no formulas within this problem. The problem wants me
to set the slides to their correct physical state of CO at the
specified temperatures within the question. I already set the
slides to what I think are the correct answers in the first
picture. Now, I am just looking for confirmation that I selected
the correct slide for A, B, and C. Thanks.
There are three sets of sketches below, showing the same pure molecular compound (carbon monoxide,...
Each sketch below shows a flask with some gas and a pool of mercury in it....
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 2 atm. A J-shaped tube is connected to the bottom of the Task, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in...
Each sketch below shows a flask with some gas and a pool of mercury in it....
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 1 atm. A J-shaped tube is connected to the bottom of the flask, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in...
Part A: Part B: Recognizing consistency among equilibrium constant, free... A student made measurements on some...
Part A:
Part B:
Recognizing consistency among equilibrium constant, free... A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG'. . The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions eº. His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of sulfur 28) does this represent? A) 3.01 mol B) 1.81 mol C) 1.77 mol D) 1.09 mol E) 0.333 mol 29) When the equation below is balanced with the lowest possible whole number coefficients, what is the sum of the coefficients? 29) Ca(s) + HCl(r) → CaCl2(s) + H26) A) 2 B) 5 C) 4 D) 8 E) 10 o) Aspirin is the common...
There are four sketches below. The first sketch shows a sample
of Substance X. The three sketches underneath it show three
different changes to the sample. You must decide whether each of
these changes is possible. If a change is possible, you must also
decide whether it is a physical change or a chemical change.
Each sketch is drawn as if the sample were under a microscope so
powerful that individual atoms could be seen. Also, you should
assume that...
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change. Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should assume that...
help, please!
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change. Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should...
There sets of sketches below, showing the same pure molecular compound (water, molecular formula H_2 O) at three different temperatures. The sketches are drawn as if a sample of water were under a microscope so powerful that individual atoms could be seen. Only one sketch in each set is correct. Use the slider to choose the correct sketch in each set. You may need the following information: melting point of H_2 O: 0.0 degree C boiling point of H_2 O:...
There are three sets of sketches below, showing the same pure molecular compound (sulfur dioxide, molecular formula SO,) at three different temperatures. The sketches are drawn as if a sample of sulfur dioxide were under a microscope so powerful that individual atoms could be seen. Only one sketch in each set is correct. Use the slider to choose the correct sketch in each set. You may need the following information: En melting point of SO2: -72.0°C boiling point of SO,:...
There are no formulas within this problem. The problem wants me
to set the slides to their correct physical state of CO at the
specified temperatures within the question. I already set the
slides to what I think are the correct answers in the first
picture. Now, I am just looking for confirmation that I selected
the correct slide for A, B, and C. Thanks.
There are three sets of sketches below, showing the same pure molecular compound (carbon monoxide,...
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 2 atm. A J-shaped tube is connected to the bottom of the Task, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in...
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 1 atm. A J-shaped tube is connected to the bottom of the flask, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in...
Part A:
Part B:
Recognizing consistency among equilibrium constant, free... A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG'. . The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions eº. His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of sulfur 28) does this represent? A) 3.01 mol B) 1.81 mol C) 1.77 mol D) 1.09 mol E) 0.333 mol 29) When the equation below is balanced with the lowest possible whole number coefficients, what is the sum of the coefficients? 29) Ca(s) + HCl(r) → CaCl2(s) + H26) A) 2 B) 5 C) 4 D) 8 E) 10 o) Aspirin is the common...
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