I NEED HELP AND FAST! please make sure to answer all the questions 1. 2 Co + 3 H2O → Co2O3 + 3 H2

List all of the elements in this equation (remember- you only have to look at one side of the arrow for this—it’ll be the same on both sides!) (Hint: the first element is cobalt and its abbreviation is Co—don’t confuse the lowercase o’s with the capital O’s)

How many hydrogen atoms on the reactant side? (remember- multiple the coefficient by the subscript)

How many oxygen on the product side?

i think the answer would be d

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.