Chemistry

There are 6. 022 Times. 1023 atoms of Hg in 1 mole of Hg. The number of atoms in 4. 5 moles of Hg can be found by multiplying 4. 5 by 6. 022 Times. 1023. Which is the number of atoms in 4. 5 moles of Hg, correctly written in scientific notation with the correct number of significant figures? 2. 7 Times. 1024 27 Times. 1023 2. 71 Times. 1024 27. 099 Times. 1023.
1 Answer
For the balanced equation shown below, how many grams of CO2 will beproduced from 74.23 grams of CO? CO + Fe3O4 3FeO + CO2
1 Answer
give free 18 points again just answer yes or nois einstein a scientist? yes or no
2 Answers
whats chemical formula ammonium iodide?
2 Answers
Answer the following question attached!!
1 Answer
the bradford assay only works at low protein concentrations
2 Answers
A compound has a molar mass of 163.59 g/mol. If you have 736.155 grams of this compound, how many moles do you have?
1 Answer
3 useful applications of alkaline earth metals
1 Answer
what is a tidal barrageplase explaine
1 Answer
What is the minimum uncertainty in a simultaneous measurement of the y-component of the proton's velocity?.
1 Answer
2. A compound with an empirical formula of C2H3Br2 has a molar mass of 373.69 g/mol. What isthe molecular formula?(The molar mass of C2H3Br2 = 186.85 g/mol)E) C4H6Br4) C2H3Br2B) CHBrC) C6H9Br6 D) C4H6Br2(0.5 Points)A
2 Answers
HURRY I HAVE 20 MIN LEFT will mark brainllest When. Coach Kwan notices that a player is getting tired, she takes out the tired player and substitutes a fresh player. Which type of chemical reaction does this best model?replacementdecompositionsynthesisoxidation
1 Answer
What is the pressure of a 1.0 L flask containing 0.12 g of He at 25C? (R= 0.0821 L atm/mol K)
1 Answer
which two body systems are primarily responsible for locomotion
1 Answer
Question 13(Multiple Choice Worth 5 points)(03.05 MC) Liquid X has a pH of 7 and Liquid Y has a pH of 8.5. Which statement is true? Liquid X is a base and Liquid Y is an acid. Liquid X is an acid and Liquid Y is a base. Liquid X is neutral and Liquid Y is a base. Liquid X is an acid and Liquid Y is neutral.
1 Answer
8. Which property is used to determine the degree of polarity between two bonded atoms? A) density B) electronegativity C) pressure D) temperature
2 Answers
What is the frequency of 14000 X ray photons having an energy of 5.27*10-5 J/Hz
1 Answer
Which of the following statements about subatomic particles is BEST supported by information in the article?A. The motion of large objects is just as unpredictable as that of subatomic particles.B. Subatomic particles dont follow the same laws of physics as large objects.C. The force of gravity acts more strongly on subatomic particles than on large objects.D. It is easier to measure the movement of subatomic particles than the movement of large objects.
1 Answer
two samples of solids have similar reactivity with acids and similar densities. their masses and volumes, however, are not at all similar. is it possible that these are the same substance?
1 Answer
A Herbig-Haro (HH) object is:_:_________.a. a small galaxy just outside the outer edge of the Milky Wayb. where a jet from a star in the process of being born collides with (and lights up) a nearby cloud of interstellar matterc. a part of a giant molecular cloud where molecules containing two hydrogen atoms formd. a star that has too little mass to start fusion in its coree. cluster of very low-mass stars, observable only with infrared radiation
1 Answer
Which of the following could be classified as producing a physical change?A. Burning a candleB. Leaving a bicycle outside to rustC. Bending sheet metalD. Toasting a slice of bread
2 Answers
What mass of sugar and water is needed to make 40 g of 10% solution?
1 Answer
Which of the following statements describes sound energy?Sound energy does not travel at all.Sound energy needs a medium to travel through.Sound energy can travel in empty space.Sound energy can only travel through air.
1 Answer
five (5) muscular injuries and disease
2 Answers