Answer: -7.5
Explanation: To solve for y in the equation -3/(y + 6) = 2, you can follow these steps:
First, we want to get rid of the fraction. To do that, multiply both sides of the equation by (y + 6) to cancel out the denominator:
-3/(y + 6) * (y + 6) = 2 * (y + 6)
This simplifies to:
-3 = 2(y + 6)
Now, distribute 2 on the right side of the equation:
-3 = 2y + 12
Next, isolate the term with 'y' by subtracting 12 from both sides of the equation:
-3 - 12 = 2y
-15 = 2y
Finally, divide both sides by 2 to solve for 'y':
-15/2 = y
So, the solution for y is:
y = -15/2
You can also express this as a mixed number:
y = -7.5
Answer:
It is a hydrogen bond.
The atomic number of sodium is 11. Sodium is a metal and it has the electronic configuration: 2, 8,1. This configuration implies that, the electrons in an atom of sodium are distributed into three different shells and the outermost shell has one electron in it. If sodium decide to give away the electron on its outermost shell, it will have 10 electrons left and those electrons will be distributed in only the first two shells and then it will be described as an ion. The third shell will not exist again because the electron there has been given away. Thus, the sodium ion is going to have a smaller atomic radius because its size has been reduced. This implies that the sodium ion will have a smaller radius than the sodium atom.
Answer:
True
Explanation:
The greenhouse effect is the process whereby there is radiation from a atmosphere planet and the planet increase the temperature of the planet's surface to a temperature above normal.In this process the Earth's atmosphere becomes thicker with the influence substances such as gases
and the radiation coming from the sun is trapped, then the Earth becomes warmer. Green house effect is seen in global warming.
Carbon neutral can be described as a process of removing huge amount of carbon dioxide from the atmosphere in order to achieve zero carbon neutrality.It is also reffered to as carbon neutrality, and this can be achieved by actions of organizations, businesses and individuals .
Carbon neutral can be achieved in two ways;
: 1.) Maintaining a balance between carbon dioxide emissions and carbon removal by means of the process called carbon offsetting
2 ) the process of removal of carbon dioxide from the atmosphere in order to balance up emissions in another place.
Carbon positive is crucial to increase the positive influence of our daily activities on climate change and our resources.
while reduce the negative effect of our activities and business on evironment.
Therefore, the practice of making operations "carbon neutral" is a way to offset whatever damage is being done to the environment due to greenhouse gas emissions by purchasing credits from "carbon-positive" projects to balance out emissions is true because the harmful gasses that is been released to the atmosphere is balance up by the carbon neutral process hence the reduction in green house effect.
selenium (Se)
arsenic (As) c
alcium (Ca)
Answer:
The correct answer is the option: arsenic (As).
Explanation:
Hello!
Let's solve this!
Nitrogen is in group V period 2 and has 5 valence electrons.
The krypton is in period 4.
If we cross these two elements, the element that is in the same group as nitrogen (V) and in the same period as Kripton (4) is Arsenic. If you have any questions, we can check it on the periodic table.
We conclude that the correct answer is the option: arsenic (As).
Answer:
The answer to your question is: Arsenic (As)
Explanation:
Krypton is a noble gas located in group VIII A and 4rd period. Nitrogen is in the 5fh group.
So, we must look for an element located in the 4rd period and group VA.
Iron (Fe) Iron is in the 4rd period and group VI B
Selenium (Se) Selenium is in the 4rd period and group VI A
Arsenic (As) Arsenic is in the 4rd period and group V A and group VA
Calcium (Ca) Calcium is located in group 4rd and group IIA
Atoms of different elements are different based on the number of protons they have in their nucleus. This number, known as the atomic number, is unique to each element and defines its identity.
The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. What makes atoms of different elements different? The fundamental characteristic that all atoms of the same element share is the number of protons.
All atoms of hydrogen have one and only one proton in the nucleus; all atoms of iron have 26 protons in the nucleus. This number of protons is so important to the identity of an atom that it is called the atomic number (Z).
The number of protons in an atom is the atomic number of the element. Thus, hydrogen has an atomic number of 1, while iron has an atomic number of 26. Each element has its own characteristic atomic number.
Answer:
the first one
Explanation:
CIO4-=-1
CI=4O=-1
O has a 2- oxidation change so
CI+4(-2)=-1
CI+(-8)=-1
CI=-1+8=7
So the oxidation number of chlorine is 7 in this case