Question

Can someone explain to me how come boiling water is endothermic? I thought if the temperature increases and heat is being released than that would be exothermic reaction?

Answer #1

If the heat is supplied to the system then that is called the
endothermic system. This required heat come from surroundings i.e.,
surroundings lose heat to rise the temperature of the system. In
water boiling case we are supplying energy **from**
the **surroundings** **to** the
**system** ( the container that consists water is
system). This supplied heat to the system rises the temperature of
water( system) so that water becomes boil.

So the flow of heat is into the system. ==> Endothermic Reaction

I am not sure how to do this problem can someone show
me how to do this.
The Haber process is often carried out at high
temperatures to increase the rate of the reaction ( and very high
pressures to drive the reaction toward products according to Le
Chatelier's principle).
Na (g) + 3
H2 (g) <--->2 NH3 (g)
a) Calculate the value of delta G for this reaction
when the temperature is 800°C, and the pressure of ammonia...

1.Heat is added to boiling water. Explain why the temperature of
the boiling water does not change. What does change?
2.How does the boiling of a liquid differ from its
evaporation?

Assign each of the following as exothermic or endothermic:
a) The vaporization of liquid water (Hint : the purpose of
perspiration is (i) to heat you or (ii) to cool you?)
b)Dissolving of solid LiCl in water (the temperature increases
as the LiCl dissolves). Has the LiCl gained or lost chemical energy
(i.e. enthalpy) in the process of dissolving? Give your
reasoning.

So frustrated right now. Can someone explain this problem to me?
How do they come up with 40%?
Jackie's Creamery sells fudge, caramels, and popcorn to
consumers in the local community. The manager at the creamery
sold
14,000 units last year. Popcorn outsold fudge by a ratio of 2 to
1. Sales of caramels equaled sales of popcorn. Total fixed costs
for Jackie's Creamery are
$13,000.
The managerial accountant reported the following
information:
Fudge
Caramel
Popcorn
Sales
$6.00
$8.00
$9.00...

An endothermic reaction is carried out in a coffee-cup
calorimeter (with water). Which statement(s) is(are) incorrect for
this process?
I. The temperature of the water decreases.
II. The enthalpy change for the reaction equals qH2O.
III. Heat is absorbed by the water.
IV. The enthalpy change for the reaction is positive.
V. The products have higher enthalpy than the reactants.

Can someone please explain to me in the simplest way, how to go
about solving a mathematical proof? For example, mathematical
proofs involving rational/real numbers and integers. I find them
hard to solve and would like to get better at them.

How can we use experimental data to determine if a reaction is
exothermic or endothermic? Discuss how you would measure this
physically, and then use what you know about molecular
rearrangements during chemical reactions to discuss how you would
calculate this value.

1. A 78.0 g piece of metal at 89.0°C is placed in 125 g of water
at 21.0°C contained in a calorimeter. The metal and water come to
the same temperature at 27.0°C.
- How much heat (in J) did the metal give up to the water?
(Assume the specific heat of water is 4.18 J/g·°C across the
temperature range.)
- What is the specific heat (in J/g·°C) of the metal?
2. A 0.529 g sample of KCl is added...

Can
someone "dumb" this question down for me? Can you explain every
step of how you got your answer? I need to see all work and
understand it.
For each of the following three sample sizes, con- struct the
95% confidence interval. Use a sample proportion of 0.40
throughout. What happens to interval width as sample size
increases? Why?
Ps = 0.40
Sample A: N = 100
Sample B: N = 1000
Sample C: N = 10,000

Can someone convert this link to MLA format for me.
Aslo, please show me how i sight it within the body
paragrahs.
https://www.debt.org/faqs/americans-in-debt/poverty-united-states/

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