The average weight of an atom of an element, formerly based on the
weight of one hydrogen atom taken as a unit or on 1/16 (0.0625) the
weight of an oxygen atom, but after 1961 based on 1/12 the weight of the
carbon-12 atom.
The charge of a nucleus is neutral, meaning it’s zero
the positive charges of an atom equal the negative charges so the atom has a neutral charge
Answer:
i can't read it.. maybe upload a visible picture?
The sodium-potassium pump (NaK) is very important for the function of the most cellular process in the body, It's responsible for the movement of the K ions into the cell and the movement of the Na ions outside the cell at the same time.
It's important for excitable cells such as a nerve cell, the pump helps it with transmitting pluses. It also important in controls cardiac contractions and control blood pressure. It plays an important role in maintaining the sodium and potassium balance in the body in the kidneys.So the Cell function will be affected badly if there was no sodium-potassium pump.
Answer: The density of the material is 2.66 g/mL and it is likely this is made of Aluminum
Explanation:
The first step to know the material of the chunk of metal is to calculate its density. The general formula for density is P (density) = 
. Moreover, in this case, it is known the mass is 37.28 g, but the volume is not directly provided. However, we know the water in the graduated cylinder had a volume of 20.0 mL and this increased to 34.0 mL when the chunk of metal is added, this means the volume of the metal is 14 mL (34.0 mL - 20.0 mL = 14 mL). Now let's calculate the density:
This means the density of this metal is 2.66 g/mL, which can be rounded as 2. 7 g/mL, and according to the chart, this is the density of aluminum. Therefore, this material of this chunk is aluminum.
