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xz_007 [3.2K]
3 years ago
10

Balance and classify the following equations as synthesis, decomposition, single replacement, double replacement, or combustion:

a. C4H10 + 02 -> CO2 + H20 Reaction Type: b. ___ HNO3 + Mg(OH)2 -> Mg(NO3)2 + H20 Reaction Tyne.​
Chemistry
1 answer:
vodomira [7]3 years ago
8 0
See which one is the bigger equitation to classify the smallest in order
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How much ice (in grams) would have to melt to lower the temperature of 354 ml of water from 26 ?c to 6 ?c? (assume the density o
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Heat gained in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:<span>

Heat = mC(T2-T1) 

When two objects are in contact, it should be that the heat lost is equal to what is gained by the other. From this, we can calculate things. We do as follows:

<span>Heat gained = Heat lost</span>
mC(T2-T1) = - mC(T2-T1) 

C(liquid water) = 4.18 J/gC
C(ice) = 2.11 J/gC

</span><span>(354 mL)(1.0 g/mL)(4.18 J/gC)(26 C - 6 C) = m(2.11 J/gC)(6 - 0C) </span><span>
m = 2337.63 g of ice

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3 years ago
An exothermic reaction has a positive enthalpy (heat) of reaction.(T/F)
mestny [16]

Answer:

True.

Explanation:

An exothermic reaction has a positive enthalpy (heat) of reaction. However, it can be negative in some circumstances.

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