胡雪8°

A 0.0155 kg bullet hits a 1.00 kg block of wood that is attached to wires (lengths equals 1.75 m) so that it can swing like a pendulum...?

What is true about the melting points of ionic and molecular compounds?

CHEMISTRY - dipole moments?

A sample of neon occupies volume of 461 mL at STP. What will be the volume of the neon when the pressure is reduced to 93.3 Pka?

How can you count the moles in this equation?

When sodium chloride dissolves in water, how can you best describe what happens?

How many mercuric chloride must react to give 5.35 grams of Hg?

1. Given y=2x^2-4x+3 Find the vertex 2. Given y=2x^2-4+3 Find the Y-Intercept 3. Given f(x)=x^2+5x-8; g(x) = -2x+3 Find (f+g)(x)?

Is someone able to put this equation in quadratic form? 4x+5=8√(1-x^2 )?

how many grams of NaCl would be formed from 100 grams of Na2CO3 in following reaction? Na2CO3 + 2HCl = 2NaCl + CO2 + H2O?

How many energy is required to melt a 10g block of 0C ice to 0C water?

In the reaction 2H2O (1) + 2CI- (aq) --> H2 (g) + CI2 (g) + 2OH- (aq) how many electrons are transferred?

For the reaction Cl2 + 2KBr -> 2KCl + Br2 How many grams of potassium chloride can be produced from 17.2 grams of potassium bromide?

cheistry help?

Chemistry problem?

What is the oxidation number for each atom in NH₄F? N=+3, H=-4, F=+1 N=-3, H=+1, F=-1 N=+3, H+1, F=-1 N=-3, H=-1, F=+1?

chemistry gas laws help?

Diamond crystallizes in a cubic lattice with an edge length of 357 pm.?

1)Enter a quadratic polynomial which has zeros at -5 and 10.?

'why does the color of copper change on heating but not in electric wires when they pass current?

A wire having total resistance of 32 ohms is cut into 4 equal lengths. Three of them are connected in parallel and one in series to them.?

GAS STOICHIOMETRY. HELP!!?

Gas Stoichiometry question?

Hey please help me?

A chemist has 14.0 M HBr and would like to use it to make 500.0 mL of 5.3 M HBr. Describe how she should do this. PLEASE HELP!!!?

Net ionic equation?

Hey! I need some chemistry homework help please.?

Help with organic chemistry homework!?

Chemistry help?

Complete and balance the equation for the reaction that occurs when HBr(Aq) and KOH(aq) are mixed.?

How many electrons are needed for manganese in the balanced oxidation half-reaction? MnO4- (aq) + H+ (aq) → Mn2+ (aq)+H2O(l)?

Write and equation of the tangent line y=f (x) to the function at the given value.?

the compound name for lithium chlorine and oxygen?

Math word problem?

Which of the following equations represents an oxidation Zreduction reaction?

Calculate the specific gravity of the total mixture?

A sample of 1.50 moles of an ideal gas are contained in a 15.0 L tank.?

Xenon can be the central atom of a molecule by expanding beyond an octet of electrons. Show all lone pairs. XeF2 and XeF2O?

factor the following expressions: 1.) 2x^2-8 2) x^2+9x+14 3.) 2x^2-8x thankyou!?

GAS LAW CHEM QUESTION!?

Completely factor 3x^3-x^2-12x+4?

Consider the following quadratic equation. (x+3)^2=43 When taking the square root of both sides, how many solutions will the equation have?

'What mass of ethane gas (C2H6) must burn in excess oxygen to produce 2.00 x 103 kJ of heat, given the thermochemical equation'?

During an experiment, a student adds 2.90 g of CaO to 400.0 mL of 1.500 M HCl.?

普通化學 兩性物質?

solve cos(2theta-pi)=squareroot2/2?

Balancing oxidation reduction problem (BASIC MEDIUM) PLz. give the balanced equation .. Reducing agent and oxidizing agent thx.?

Calculate the volume in mL of a 1 in 5 (w/v) stock solution that is needed to prepare 50 mL of a 1 in 200 solution. Ans. 1.25?

explain why a solution of a strong acid has a different ph than a solution of a weak acid of the same concentration?

What volume of O2 gas (in L), measured at 782 mmHg and 35 ∘C, is required to completely react with 53.5 g of Al? Please help.?