胡雪8°

Please help It's Chemistry and This is very important for me.?

Why can you not find the square root of numbers?

Which solution has the lowest pH?

Three numbers1400, 1960 and n have a G.C.D and L.C.M of 70 and 22 X 52 x 72 x 11 respectively. Find the least possible value of n?

Calculus help!!!!?

A(g) ⇌ 2B(g) Kp = 80 In which of the the reaction proceed to the RIGHT? W. 1.0 atm 1.0 atm X. 0.010 atm 1.0 atm Y. 1.0 atm 0.010 atm?

what is the Ka of a 0.0981 M solution of hydrocyanic acid with a pH of 6.00?

How is the flow of electrons when Zn-carbon cells are connected in series?

helpppppppppppp How does an atom of sulfur-36 become a sulfide ion with a -2 charge?

MATH SAT QUESTION?

a) Which of the following is equivalent to the distance between the points (-5, 3) and (1, 2)? Select all that apply.?

Chemistry Help??? MULTIPLE CHOICE?

HONORS CHEM HELP PLZ !!!?

HONORS CHEMISTRY HELP!!!!?

A syringe contains 15 mL of air at a pressure of 1.3 atm. What is the new pressure if the plunger is pushed in, so the volume of air is 9 mL?

Calculate the mass of 2.63 x 1014 molecules of C12H22O11.?

CHEMISTRY PLEASE ANSWER ASAP?

What is always true of a combustion reaction?

Given that the specific heat capacities of ice and steam are 2.06 J/g°C and 2.03 J/g°C?

What is the molecular structure of the stable form of FNO2? (N is the central atom.)?

Explain what type of bond an atom with 2 electrons (NOT Helium) in its outermost shell will form.?

A neutron of mass 1.67 x 10^-27 collides head on with a deuterium at rest. If the velocity before the collision of the neutron is 8.8km/s?

There are two 2 digit numbers ab & cd. ba is another number prepared by reversing ab.If ab*cd=493 & ba *cd=2059. What is the value of ab+cd?

Chemistry help needed badly?

How many calories will it take to raise the temperature of a 37 g gold chain from 20°C to 120°C?

A base oxide soluble in water?

What is the pH,POH,(H+), and (OH-) of 1.00x10^-5 M HBr solution?

Calculate the energy for one mole of photons (an einstein) for light absorbed at 685 nm.?

Ba(OH)2 + H2SO4 Conductivity Problem?

Vapour density of a volatile substance is 4(CH4=1). Its molecules weight would be?

Podrian ayudarme a resolver estos radicales pofavooor?, √2 −√3 −√5 / √2 + √3 + √5 de ante mano enserio gracias?

CHEMISTRY HELP!?!?! URGENT!!?

A mixture formed by adding 40.0 mL of 2.5×10−2M HCL to 170mL of 1.0×10−2 HI. What would the pH be?

If 0.233 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?

Homework help?

EASY MATH QUESTION THAT I CAN'T DO?

Name each of the following alkenes.?

Can anybody answer this chemistry question? At 2000°C the equilibrium constant for the reaction is Kc = 2.4 ✕ 103.?

Calculating concentrations with equilibrium constant?

Mg +H2SO4 -> MgSO4 +H2 calculate the mass of hydrogen produced when 2.4g of magnesium reacts completely with the acid PLS EXPLAIN WITH STEPS?

calculate the volume of 45.0 grams of carbon dioxide gas at 280 K and 1.2 atm?

Chemistry help?

What are the reactants and products of CaCO3 ----> CaO + CO2 ? How do you figure that out?

A cylinder contains air at 45.0 psi in volume of 43.9 cubic inches. How much pressure is needed to compress the air to 8.0 cubic inches?

Chemistry Gas Laws What volume of 5.75 M phosphoric acid is required to neutralize 22.2 mL of 2.22 M potassium hydroxide?

Mg(s) + 2 HCl(aq)  MgCl2 (aq) + H2(g) b. What mass of magnesium will react with 8.5 liters of 0.7 M hydrochloric acid?

Find the exact value of the expression for the given value of 0. Cos(20) if 0=pi/4?

HELP WITH MATHS URGENT?

what is the weight percentage of KCIO3 in this sample? I have no idea how to do this..this question is due in 3 hours please help me?

A smooth spherical object is projected horizontally from a point a vertical height H = 26.18 metres above horizontal ground with?