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katrin2010 [14]
3 years ago
15

Can you help me on this since im struggling on this since day 1

Chemistry
1 answer:
Vladimir79 [104]3 years ago
7 0
2Al(No3)3(aq) + 3Ba(OH)2(aq) ------------> 2Al(OH)3(s) + 3Ba(NO3)2(aq)

Ca(s) + ZnBr2(aq) -------------------> Zn(s) + CaBr2(s)

CuSO4(aq) + Na2S(aq) --------------> CuS(s) + Na2SO4(aq)

KBr(aq) + Pb(Cl3)2(aq) -----------------> PbBr2(s) + K(ClO3)(aq)


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Answer:

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3 years ago
Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a ca
Oksi-84 [34.3K]

Answer:

30 kJ

Explanation:

Arrhenius equation is given by:

k=Aexp(-Ea/RT)\\

Here, k is rate constant, A is Pre-exponential factor, Ea is activation energy and T is temperature.

taking natural log of both side

ln k = ln A - Ea/RT

In Arrhenius equation, A, R and T are constant.

Therefore,

ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}

Ea_1-Ea_2 is the  lowering in activation energy by enzyme,

R = 8.314 J/mol.K

T = 37°C + 273.15 = 310 K

\frac{k_2}{k_1} =1\times 10^5

ln 1\times 10^5 =\frac{Ea_1-Ea_2}{RT}\\{Ea_1-Ea_2} = 11.512 \times 8.314 \times 310\\=29670\ J\\=30\ kJ

4 0
3 years ago
How many moles of C6Cl6 are in 5.44g
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Explanation:

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Proper significant figure: 27.01 + 14.369
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Answer:

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Explanation:

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8 0
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The specific heat of gold is 0.031 calories/gram°C and the specific heat of silver is 0.057 calories/gram°C. If equal amounts of
Vikki [24]
I think the substance that will heat up faster would be the silver metal since it has a higher heat capacity. Heat capacity is the amount of heat needed to raise the temperature of the system into one degree. Heat capacity and heat energy is directly related so higher value of heat capacity would lead to higher heat energy.
3 0
3 years ago
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