Y is Po-218.
<h3>Explanation </h3>
Here's the symbol of a particle in a nuclear reaction. .
A stands for mass number. Z stands for atomic number. Both numbers shall conserve in a nuclear reaction.
- The mass number on the left hand side is 222.
- The two mass numbers on the right hand side add up to A + 4.
- 222 = A + 4.
- A = 218
So is the case for the atomic number. Try figure out the atomic number of Y using the same approach.
- The atomic number on the left hand side is 86.
- The two atomic number on the right hand side add up to __ + __.
- 86 = __ + __.
- Z = 84.
What element is Y? The atomic number of Y is 84. Refer to a periodic table. Element 84 corresponds to Po (polonium). Y is Polonium-218. The symbol of Y should be written as . Hence the equation:
.
A. Because the chemicals in the battery are being converted to light and heat energy from the bulb!
The right answer is B.
In proposition B, 0.00116 meters is equal to 1.16 millimeters.
In Proposition A, it is equal to 11.6 millimeters (1km = 1,000,000mm), the decimal point is six digits.
In Proposition C, 0.116dm is equal to 11.6 millimeters (1dm = 100mm), the decimal point is shifted by two digits.
In proposition D, 1.16cm is equal to 11.6 millimeters (1cm = 10mm), the decimal point is shifted by one digit.
Answer:
See the answer below
Explanation:
Plants grow in many different shapes and sizes. Much of their shape depends on an internal structure that is composed of carbon-containing molecules such as cellulose and lignin. Plants that have a strong internal structure can grow larger than other plants because their structure can support their size. Plants obtain the majority of the carbon necessary for building these structural molecules from <u>carbohydrates that are synthesized during photosynthesis.</u>
<em>Plants obtain carbon to build their structures by a process known as carbon fixation or photosynthesis. During this process, inorganic carbon in the form of carbon dioxide reacts with water to produce carbohydrate. Radiant energy from the sun is required for the process to go into completion and oxygen is released as a by-product. The entire process can be summarized by the following equation:</em>