Answer:
Be³⁺
Explanation:
Be³⁺ has only one electron since it has loss 3 electron and is therefore capable of having a line spectrum similar to hydrogen atom.
If the patient is given 150 mL/h of IV saline for 1.5 h 1.97 g NaCl she receive.
<h3>What is Molarity ?</h3>
Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar Concentration. The S.I unit of Molarity is molar (M) or mol/L.
It is expressed as:
Molarity (M) =
Molarity × Volume of solution = Number of moles
As we know that
Number of moles =
So,
Molarity × Volume of solution =
Molarity × Volume of solution × Molar Mass = Mass
Volume =
= 225 mL
Mass of NaCl = Molarity × Volume of solution × Molar Mass
= (0.15 mol/L NaCl) × (58.44 g/mol NaCl) × (225 ml × 0.001)
= 1.97 g NaCl
Thus from the above conclusion we can say that If the patient is given 150 mL/h of IV saline for 1.5 h 1.97 g NaCl she receive.
Learn more about the Molarity here: brainly.com/question/14469428
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It is
A Venus flytrap closes on a fly.
C. A plant grows toward the sunlight.
E.Bright lights cause a baby to blink.
( i had a test have a good day )
Answer:
Group VII
Explanation:
The electronegativity of an element is the tendency of the atoms of that element to attract electrons that are shared with other atoms.
Each element has a different electronegativity from other elements. In particular:
- Electronegativity increases as we move towards the right along the periodic table - this is due to the fact that as we move to the right, the number of valence electrons in the atom increases, and therefore the tendency of the atom to attract more electrons increases more, in order to fill the valence shell. In fact, the most electronegative group is group VII, which is the last but on one on the right (the last group on the right, VIII, is the group containing the noble gases, which do not react at all, so they do not attract electrons)
- Electronegavity also decreases as we move downward along the periodic table - this is because as we move downward, the number of shells and electrons around the atom increase, so all these electrons "shield" the nucleus (which is positively charged, so it is the one attracting the electrons from other atoms), and so the tendency to attract more electrons decreases.
So, the group of element most electronegative is
VII