Green plants use light from the sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose and oxygen gas. Calculate the molecules of water needed to produce ___ of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

Answers

Answer 1

Answer:

Photosynthesis is the process in which green plants and some other organisms that makes use of the energy from the sun, converts carbon dioxide and water into glucose (a sugar) and oxygen.

Equation

6 CO2 + 6 H2O → C6H12O6 + 6 O2

The number of moles of oxygen that can be obtained from 25g of water is

= 25g/ 6( (2*1)+(16) )= 25/108

= 0.23mol

Therefore 0.23moles of water yields 0.23 moles of oxygen

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Salt crystals are shaped like cubes. Salt is part of the _____.
The sum of pH and pOH for any aqueous solution equals
As the elements in Group 17 are considered in order of increasing atomic number, the chemical reactivity of each successive element(1) decreases(2) increases(3) remains the same
A mass of 63.658 g of carbon contains how many miles

Why do cats purr when they are happy?

Answers

cats use the ability to purr for more than just that they use it when they are frightened, when they want other cats to know that they are friendly,and when its mealtime. but if your asking how they purr its just something in there brain telling them to purr.

Which is not a functional group?
a)amino
b)carboxyl
c)halide
d)hydroxyl

Answers

The correct answer is C. Halide is not a functional group. Instead, it is a halogen atom having a negative charge. These halide ions are fluoride, chloride, iodide, astatide and bromide.

The Metal Wire In An Incandescent Lightbulb Glows When The Light Is Switched On And Stops Flowing When It Is Switched Off. This Simple Process Is Which Kind Of Change?

Answers

Answer: physical change

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these changes

Example: Melting of ice

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these changes.

Example: Corrosion of iron called as rusting.

Thus when the metal wire in an incandescent light bulb glows when the light is switched on and stops flowing when it is switched off is just a physical change as there is no change in chemical composition.

Physical Change. If matter is not chemically changing, then its a physical change.

Which atomic model proposed that electrons move in specific orbits around the nucleus of an atom

Answers

The atomic model that proposed that electrons move in specific orbits around the nucleus of an atom is the Bohr model, or the Rutheford-Bohr model, envisioned by Niels Bohr in 1913.

Which statement is true regarding the formation of ionic bonds?(a). Anions and cations share electrons.
(b). Atoms transfer electronsto form cations and anions.
(c). Ions transfer electrons to form cations and anions.
(d). Anions and cations donate electrons.

Answers

Answer: (b). Atoms transfer electrons to form cations and anions.

Explanation:

Covalent compounds are formed by sharing of electrons takes place between non metals.Ionic compounds are formed by transfer of electrons between metals and non metals.

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Sodium atom has oxidation number of +1.

Electronic configuration of sodium:

$[Na]=1s^22s^22p^63s^1$

Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.

$[Na^+]=1s^22s^22p^63s^0$

Chlorine atom has oxidation number of -1.

Electronic configuration of chlorine:

$[Cl]=1s^22s^22p^63s^23p^5$

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

$[Cl^-]=1s^22s^22p^63s^23p^6$

In sodium chloride the one electron from sodium metal gets transferred to chlorine atom and thus form an ionic bond.

Answer:

Atoms transfer electrons to form cations and anions.

Explanation:

Covalent compounds are formed by sharing of electrons takes place between non metals.Ionic compounds are formed by transfer of electrons between metals and non metals.

When comparing bromine to chlorine, bromine hasA. Fewer protons in its nucleus.
B. A weaker effective nuclear charge
C. More valence electrons
D. More electron shielding

Answers

Explanation:

I'm pretty sure the answer is D

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a sample of copper wire with a mass of 1.659 g is heated with excess powdered sulfur until the copper has combined with the sulfur, and all the extra sulfur has been burned off. The final product (a sulfide of copper ) has a mass of 2.080 g. Calculate the empirical formula of the product, and name it.

A 12 kg object experiences a net force of 120 N. What acceleration will this object experience?

When forces attracting solvent particles to each other are broken what is provided for a solution. 1. Energy for the solute to precipitate 2. Space for the solute in the solvent3.Inertia for the solute to move into the solvent4. Nothing is provided

Hydrogen bonds:__________ a) form between two hydrogen atoms. b) form only between hydrogen and oxygen atoms within a molecule. c) form only between a weak electronegative atom and hydrogen. d) involve a transfer of electrons. e) form weak interactions but can provide structural stability when many are found in a single molecule.