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Ira Lisetskai [31]
3 years ago
8

What observation would indicate that an endothermic reaction is occuring in a beaker

Chemistry
1 answer:
galina1969 [7]3 years ago
4 0
If something is melting or boiling

Endothermic reactions mean heat is added
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Calculate the volume of dry CO2 produced at body temperature (37 ∘
ra1l [238]
Using the equation PV = nRT
Therefore; V = nRT / P
Need moles of glucose converted to moles of the product gas (CO2).

Molecular weight calculation:
C 6 X 12.01 = 72.06
H 12 X 1.01= 12.12
O 6 X 16.00 = 96.00
 sum = 180.18
25.5 g of C6H12O6 ( 1 mol C6H12O6 / 180.18 g) ( 6 mol CO2 / 1 mol C6H12O6) = 0.84915 mol CO2 gas.
Convert temp: 37 °C + 273.15 = 310.15 K
V= ((0.84915 mol)× (0.0821 L atm / mol K) (310.15 K))/0.980 atm
 V = 22.0635 L
  = 22.06 L CO2
7 0
3 years ago
Read 2 more answers
What are the reasons of greenhouse effect?
Leya [2.2K]

Answer:

Explanation:

Causes of Greenhouse Effect

  • Burning of Fossil Fuels. Fossil fuels are an important part of our lives.
  • Deforestation. Plants and trees take in carbon dioxide and release oxygen.
  • Farming.
  • Industrial Waste and Landfills.
  • Global Warming.
  • Depletion of Ozone Layer.
  • Smog and Air Pollution.
  • Acidification of Water Bodies.

5 0
3 years ago
What mass of silver chloride (m = 143.4) will dissolve in 1.00 l of water? the ksp of agcl is 1.8 × 10–10 ?
trapecia [35]
Given that solubility product of AgCl = 1.8 X 10^-10

Dissociation of AgCl can be represented as follows,

AgCl(s)             ↔      Ag+(ag)             +           Cl-(aq)

Let, [Ag+] = [Cl-] = S

∴Ksp = [Ag+][Cl-] = S^2

∴ S = √Ksp = √(1.8 X 10^-10) = 1.34 x 10^-5 mol/dm3

Now, Molarity of solution = \frac{\text{weight of solute}}{\text{Molecular weight X volume of solution (l)}}
              ∴  1.34 x 10^-5     = \frac{\text{weight of AgCl}}{143.4 X 1}
∴ Weight of AgCl present in solution = 1.92 X 10^-3 g

Thus, mass of AgCl that will dissolve in 1l water = 1.92 x 10^-3 g
7 0
3 years ago
Zachary adds 9.7 g to 1.114 g.<br> How many significant figures should his answer have?
makvit [3.9K]
Always use least amount of sig figs possible. So this 9.7 would be (answer): 2 sig figs
5 0
3 years ago
What is the sum of 16+ -20?
mr Goodwill [35]

Answer:

-4

Explanation:

PLz give me brainliest I worked hard thank u

6 0
3 years ago
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