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Coefficient of Friction?

When crystal of copper sulphate are strongly heated the Residue obtained is what?

How many photons of electromagnetic radiation of frequency 4.56 MHz are needed to have a total energy of 5.4J?

how to prepare 100 ml of 0.4 N Naoh?

Help balancing these chemical reactions for basic/acidic conditions?

what is the angle of reflection when light enters parallel to the mirror?

How to evaluate the expression (2.6)+(8-4)+1?

is 16:60 and 4:15 equivalent?

Draw the structure of NCNH2, the atoms are connected as shown in the formula. Minimize the formal charges and include all lone pairs.?

why iron, cobalt and nickle do not form typical interstitial carbides? what are the carbides they form?

Trigonometry Vectors in the Plane Question, Please Help?

Please help me with indices. Thanks in advance?

A heat transfer of 8.0×105 J is required to convert a block of ice at -15 ∘C to water at 15 ∘C. How to find the mass?

Describe nuclear equations?

chem lab question!?

You have 75.0 mL of 0.125 M HNO3 to which you add 75.0 mL of 0.100 M KOH. What is the resulting pH of the solution?

The median of a set of six consecutive integers is 29/2. What is the value of the smallest integer in the set? Best answer?

Chemistry Help?

chem help?

Pre-Calc: Bearing Lookout Problem?

Write the equation of the line that passes through: (1,-4) and (5,3)?

How many moles of BaCl2 are formed in the neutralization of 393 mL of 0.171 M Ba(OH)2 with aqueous HCl?

The compound NOCl decomposes to nitric oxide and chlorine according to the following equation?

CHEM HELP??? 6 multiple choice questions?

Chemistry help?

the total volume of seawater is 1.5 x 10^21 L?

Double Angle Formulas Help?

****** ## What is the ratio * + # to * = 6 + 2 : 6. Can you simpify further?

Trouble with Understanding Redox Chemistry?

Simple organic chem question?

The pH of this solution is what?

Help with equation?

Math Question?

chemistry help! MCQ organic question?

A 120 ml flask contains 2.7 micrograms of O2 at 17 degrees celsius. What is the pressure in the flask?

Can someone help me with this chemistry problem?

what are the concentrations (M) of Fe3+ and I- obtained by dissolving .200 mol FeI2 in water and diluting to 725ml?

what device do i use to measure the transmittance and absorbance of light of a sample?

Using 273.15 K as the value for Zero degree Celsius convert 45.1° C to Kelvin. 6.05 K 318 K 318.3 K 1.23 x 104 K?

Is there 6.02x10^23 atoms in 0.5 mole of oxygen. If so, how? Isn’t there 6.02x10^23 atoms in every ONE mole of a substance?

How to synthesise indane from Benzene ?

INTEGRATION of sinx/root(36-cos^2x)?

Physics problem. Rotational Equilibrium.?

Simplifying Trig Equation Problems! Please Help!!?

lithium sulfate and lead(II) acetate. Express your answer as a chemical equation.?

Problem involving chemical equilbrium?

What is the H+ concentration in mol dm-3 in a solution of pH 4.3 ?

Calculate the molaraty of the H2SO4 solution if 16.45 Ml of NaOH was necessary to reach the end point of titration.?

How do u solve this chemistry electrolysis question?

How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.50 kg?