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suter [353]
4 years ago
15

What does the symbol ka mean in chemistry?

Chemistry
2 answers:
Dmitry_Shevchenko [17]4 years ago
4 0
 <span>Ka is an equilibrium constant for the partial ionization of "weak" acids in water.</span>
goblinko [34]4 years ago
3 0
Ka is an equilibrium constant for the partial ionization of "weak" acids in water. If such a weak acid is HOAc, the ionization is 
<span>HOAc = H+ + OAc- </span>
<span>and Ka= [H+][OAc-]/[HOAc] </span>

<span>Ka values range from about 10-2 to 10-14 Greater than 10-2, they are essentially strong acids, and below 10-14, they produce no more [H+] in water than would normally be observed.

</span>
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What pressure would be required to take 100.0 ml of a gas at 103.0 kPa and squish it down to 2.00 ml
melamori03 [73]

Answer:

5150 kPa

Explanation:

Given that,

Initial volume, V₁ = 100 mL

Initial pressure, P₁ = 103 kPa

Final volume, V₂ = 2 mL

We need to find the new pressure of the gas. The relation between the pressure and the volume of gas is given by :

P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{103\times 100}{2}\\\\P_2=5150\ kPa

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7 0
3 years ago
A. Neutrons and electrons
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Answer:

D.

Explanation:

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5 0
3 years ago
Part B Now that we have put a coefficient of 3 in front of CaSO4, what coefficient should go in front of CaCl2 to balance calciu
Jet001 [13]

Answer: The coefficient must be 3.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

CaSO_4+AlCl_3\rightarrow CaCl_2+Al_2(SO_4)_3

The number of atoms of each element has to be same on both sides, thus the balanced chemical reaction will be:

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Thus a coefficient of 3 should go in front of CaCl_2 to balance calcium (Ca).

4 0
3 years ago
1.00 x 10^6 atoms of gold is equivalent to how many grams?
S_A_V [24]

Answer:

3.27 x 10⁻¹⁶ grams

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moles Au = 1.00 x 10⁻⁶ Atoms / 6.02 x 10²³Atoms / mole = 1.66 x 10⁻¹⁸ mole Au

grams Au = 1.66 x 10⁻¹⁸ mole Au x 196.97 grams Au/mole Au

= 3.27 x 10⁻¹⁶ grams Au

8 0
4 years ago
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