Answer:
Fluorine, oxygen, or nitrogen
Explanation:
<u>Hydrogen bridge bond</u>: It is an attraction that exists between a hydrogen atom (positive charge) with a very electronegative small atom, such as fluorine (F), oxygen (O) or nitrogen (N) (FH, OH, NH), which It has a pair of free electrons (negative charge), hence the name "hydrogen bond", which should not be confused with a covalent bond to hydrogen atoms). A hydrogen bridge is actually a dipole-dipole attraction between molecules that contain these three types of polar junctions.
This type of attraction has only a third of the strength of covalent bonds, but it has important effects on the properties of the substances in which they occur, especially in terms of melting and boiling points in crystal structures.
The answer is it breaks down food into energy
Have a Nice day
Answer:
Explanation:
a ) period 4 noble gas is krypton
isoelectronic with it are Sr ⁺² and Br⁻
compound is SrBr₂
b ) Period 3 noble gas is Argon
isoelectronic with it are Mg⁺² and O⁻²
compound is MgO
c) 2+ ion is the smallest with a filled d subshell is Zn⁺² , smallest halogen
is F⁻
compound is ZnF₂
d ) ions from the largest and smallest ionizable atoms in Period 2
Li⁺ and F⁻
compound is LiF
For the first reaction, we use it stoichiometric coefficients and the molar mass of zinc. Also, we use the conditions at STP that 1 mol of a substance is equal to 22.4 L. Calculation is as follows:20.0 g (1 mol / 216.6 g)(1 mol O2 / 2 mol Hg)(22.4 L O2 / 1 mol O2) = 1.03 L
Thus, the answer is A.
For the second reaction, we use also the stiochiometric coefficients to find the amount of AgCl produced from the given conditions.(0.10 mol AgNO3 / 1L soln) (30.0 mL soln) (1L / 1000 mL) ( 1 mol AgCl / 1 mol AgNO3) =0.003 mol AgCl
Thus, the answer is A.
The size of most eukaryotic animal cells range from 1 - 30 micrometers while the size of, let's say coccus bacteria is between 0.5 - 1.0 micrometers. So, if the largest animal cell is filled with the largest coccus bacteria, we can say that 30 bacteria can fit inside.