10/01/19

A sample of 5.52 g of Mg(OH)2 is added to 25.6 mL of 0.155 M HNO3.

a) Write the chemical equation for the reaction that occursb) Which is the limiting reactant in the reaction?c) How many moles of Mg(OH)2 are present after the reaction is complete?d) How many... more

Which is an example of an organic compound?

What is isomerism and its types?

03/19/19

During electron capture a proton is transformed into a neutron.

What are the changes in atomic mass and number during this reaction?

03/18/19

What is the ionization constant at 25 ◦C for the weak acid CH3NH3 +, the conjugate acid of the weak base CH3NH2, Kb = 4.4 × 10−4 .

What is the ionization constant at 25 ◦C for the weak acid CH3NH3 +, the conjugate acid of the weak base CH3NH2, Kb = 4.4 × 10−4 .

03/17/19

Which element is more metallic between Sn or As and why?

Which element is more metallic between Sn or As and why? I know metallic characteristics consist of low effective nuclear charge, low ionization energy, low electron affinity, and large size,... more

02/18/19

what is the pressure of the neon gas in its container?

A student has stored 100.0mL of neon gas over water on a day when the temperature is 27◦C. If the barometer in the room reads 753.4 mm Hg, what is the pressure of the neon gas in its container?... more

02/10/19

Which statements(s) is/are true?

van der Waals equation: (P + n2a/V2)(V - nb) = nRT where a and b are van der Waals constants. Textbook states: The constant a relates to the number and distribution of electrons, which relates to... more

Can someone help me with this question please?

CH4(g) + 2 O2(g) --> CO2(g) + 2 H2O(g) The value of ΔH° (heat of formation) is –802.4 kJ/mol. Can you explain quantitatively the origin of the difference between this value and -890.0 kJ/mol... more

01/14/19

If the ratio of atoms in the reactants used does not equal the ratio of atoms in the equation, you will have a limiting reagent.

Please help me with this question. Is this true or false?

12/11/18

Which ones will have a nonzero dipole moment?

CF4CH2Cl2CH2CH2GeHCl3

09/28/18

The electromagnetis spetrum is useful on Earth but not in space

I need to know now

09/17/18

How to test the conductivity of liquid substances?

How to test the conductivity of liquid substances?

Molarity Written Response

Angelica made 100mL of a 3.5M salt solution. She wanted to dilute this solution to make 100mL of a 2.1M solution. She calculated that she needed 60mL of her stock solution. She added the 60mL to... more

09/05/18

Chemistry lab

An aqueous solution absorbs 10% of incident light passed through it. Calculate the absorbance if the same solution is placed in a cell 5 times as thick?
1 3

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