Which event best helped Becquerel determine uraniun radiates rays ?A)a cloudy day
B)a substance glowing in the dark
C)wrapping of ore in paper
D)exposure of a photographic plate
Answers
Like he said the answer is "D"
Related Questions
What is the molarity of a solution made with 298g of potassium chloride dissolved in enough water to make 2L of solution?
A sample of gas at 25ºc has a volume of 11 l and exerts a pressure of 660 mm hg. how many moles of gas are in the sample?
What is the mole ratio of NaOH to Al(OH)3
Gases, fluids, and other solids in contact with a moving object will produce ____ due to friction.
Answers
looking at the periodic table..
1s2,2s2,2p6,3s2,3p6,4s2,3d10,4s5
Thus, there are 5 valence electrons in the outer ring of Bromine.
Answers
Answer:
water molicules have space between them thus letting the food colour spread without stiring the water.
Which of the following statements is true?
A. The student chose the wrong tile to solve the problem.
B. The student chose the correct tile, but needs to flip the tile to make the units cancel.
C. The student chose the correct tile, but needs to add a second tile to solve the problem.
D. There is nothing wrong. The problem is ready to be solved.
Answers
The student selected the correct tile for the problem and doesn't need to flip the tile or add another tile. The problem is ready to be solved using the chosen tile. selected the correct tile for the problem and doesn't need to flip the tile or add another tile. The problem is ready to be solved using the chosen tile.
The correct answer is option D.
The student seems to be using a tile with the following information: "1.293 metric ton + 1000 kilograms/1 metric ton" to convert the mass of the container from metric tons to grams. Given that 1 metric ton is equivalent to 1000 kilograms, this tile can be used to perform the conversion. The problem statement provides the mass of the container as 1.293 metric tons, and the student wants to find the mass in grams.
A. The student chose the wrong tile to solve the problem.
This option is not correct. The tile selected by the student is appropriate for the given problem since it allows for the conversion of metric tons to kilograms, which is a necessary step to eventually convert to grams.
B. The student chose the correct tile but needs to flip the tile to make the units cancel.
This is not the case. The tile is already set up to correctly convert from metric tons to kilograms, and subsequently to grams. There is no need to flip the tile; it is correctly oriented for the given problem.
C. The student chose the correct tile but needs to add a second tile to solve the problem.
This is not necessary either. The single tile provided by the student allows for the complete conversion from metric tons to grams.
D. There is nothing wrong. The problem is ready to be solved.
This is the correct choice. The student's tile choice is appropriate, and no additional tile is required. They can proceed to solve the problem by multiplying the given mass of the container (1.293 metric tons) by the conversion factor on the tile (1000 kilograms/1 metric ton) to obtain the mass of the container in grams.
Therefore , from the given options the correct one is D.
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The question probable may be:
A student is trying to solve the following problem by selecting the tile shown. A container has a mass of 1.293 metric tons What is the mass of the container in grams? 1.293 metric ton + 1000 kilograms/ 1 metric ton Which of the following statements is true? A. The student chose the wrong tile to solve the problem. B. The student chose the correct tile, but needs to flip the tile to make the units cancel. The student chose the correct tile,but needs to add a second tile to solve the problem D. There is nothing wrong. The problem is ready to be solved.
Answers
Every organic molecules/compound contains carbon (c).
Some other very abundant are hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
I learned this with the acronym CHNOPS.
C - Carbon
H - Hydrogen
N - Nitrogen
O - Oxygen
P - Phosphorus
S - Sulfur
Hope this helps!
Answer: The elements which are common for all organic molecules is hydrogen and carbon.
Explanation:
Another name for organic molecules are hydrocarbons. This means that the molecules which consist of hydrogen and carbon atoms is an organic compound.
For Example:
are not organic compounds, because in water, carbon is not there and in carbon dioxide, hydrogen is not there. But,
is an organic compound because hydrogen and carbon both are present.
Hence, hydrogen and carbon elements are common to all organic molecules.
Answers
Final answer:
The atom X has 15 electrons.
Explanation:
The number of electrons in an atom is equal to the number of protons. Since the atom X has 15 protons, it also has 15 electrons.
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A bond is broken and energy is released.
A bond is formed and energy is absorbed.
A bond is formed and energy is released.
Answers
Answer:
A bond is formed and energy is released.
Explanation:
Given a reaction equation, the elements which we have on the left side of the arrow are called the reactants and the elements which we have on the right side are called the products.
In this exercise, the reactants are N(g) and N(g) and the products N2(g) and energy.
After the reaction took place, N(g) and N(g) disappeared and instead N2(g) was formed. We can conclude that a bond was formed between both N(g).
Also, in the products certain amount of energy was released (because we have it on the products side)
The correct option is ''A bond is formed and energy is released''