Chemistry » Page 20

Chemistry

Erik Stanton

How many neutrons are in an atom of mg-25

Answer Answers (1)

Chemistry

Ezequiel Hendrix

How many atoms are in 0.075 mol of titanium?

Proper keying of scientific notation:

N x 10^exp or N x 10e (exp)

examples: 5.6 x 10^-3 or 5.6 x 10e-3

Answer Answers (1)

Chemistry

Alannah Hebert

What holds a proton together?

A) neutron

B) residual strong force

C) strong nuclear force

D) weak nuclear force

Answer Answers (1)

Chemistry

Alayna Roman

Briefly describe what Planck and Einstein contributed to the concept of Quantum Theory

Answer Answers (1)

Chemistry

Aidyn Medina

All of the following are examples of chemical properties except All of the following are examples of chemical properties except the rusting of an iron nail left out in the rain. the ability of a drain opener to unclog a drain using sodium hydroxide. the low pH of stomach acid. heat being given off by the burning of natural gas in a kitchen stove. chlorophyll being responsible for the green color of leaves.

Answer Answers (1)

Chemistry

Guest

7.456 g sample of UF6 is added to water. 6.53 g of a solid containing U, F and O and 1.69 g of a gas are formed. The gas is 5% H and 95% F by mass. a. What is the empirical formula of the gas? In this case, the empirical formula is the same as the molecular formula (I got HF4) b. What is the molecular formula of the solid? c. Write a balanced equation for the reaction between UF6 and H2O.

Answer Answers (1)

Chemistry

Tiana

An Mgion has the same electron configuration as?

A) Ar

B) Na°

C) Ca2+

D) F-

Answer Answers (1)

Chemistry

Lawson Blair

Why will frequency decrease when wave gets longer

Answer Answers (1)

Chemistry

Theodore Howard

Which shell are the valence electrons of a germanium atom in the ground state located

Answer Answers (1)

Chemistry

Travis Roman

What is the empirical formula for a compound if a sample contains 1.0 g of S and 1.5 g of O?

SO SO3 S2O2 S2O 3

Answer Answers (1)

Chemistry

Tania Malone

How many cases of measles would you predict were reported last year

Answer Answers (1)

Chemistry

Enrique Mendoza

When a nonmetal reacts with another atom, what happens to its electrons?

Answer Answers (1)

Chemistry

Eddie Schmitt

Which of the following is a single replacement reaction?

a. 2SO2 + O2 - > 2S03

b. Zn + Cu (NO3) 2 → Zn (NO3) 2 + Cu

c. 2H2O2-> 2H2O + O2

d. AgNO3 + NaCl → AgCl + NaNO3

Answer Answers (1)

Chemistry

Agustin Smith

Glucose and fructose are monosaccharides that have the same chemical formula, C6H12O6. However, they do not react the same chemically. Which of the following generalizations can explain this?

Answer Answers (1)

Chemistry

Addyson Gentry

what is the empirical formula for a compound which contains 32% carbon, 42.66% oxygen, 18.67 nitrogen, 6.67 % hydrogen

Answer Answers (1)