forque12331 forque12331

03-10-2022
Chemistry

Answered

is a change in phase a physical changwhich of the followings are indicators that a chemical reaction has probably taken placee or chemical change?
a change in color
b change in odor
c change in temperature
d production of new solid, liquid or gas
e change shape
f change in phase
g separation of components

Answer :

Other Questions

If 30.5 g of LiBr are dissolved 350.0 g of water at 20.0 °C in an insulated container, a temperature change is observed. The AH of solution of LiBr is -48.8 kJ/

A sample of a solid organic compound is completely combusted in a calorimeter. The heat generated by combustion is transferred to the water, causing the tempera

For the balanced chemical reaction 4A1+3022Al2O3 how many moles of Al2O3 can be made by reacting 49.2 moles of Al?

29. If a walnut is burned in a calorimeter containing 40g of water, and the water temperature changes from 50°C to 60°C, how many joules of energy (q=heat) were

1 ✓2 4 5 ✓8 9 ✓ 10 Gaseous butane (CH₂(CH₂), CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). If 7.31 g

Which of the following pairs of elements are likely to form an ionic compound? Check all that apply. oxygen and bromine lithium and iodine nickel and oxygen zin

Macmillan L Draw the major organic product for the reaction: CI H₂O isopropyl alcohol Incorrect OH

If 0.339 moles of gas were generated by a reaction and collected in a 500.0-mL evacuated flask, what would the pressure be in that flask at 300°K?

Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) A reaction mixture initially contains 22.25 g Fe2O3 and 15.02 g CO. Once the reaction has occurred as completely as possible, wh

What are some tasks commonly performed in Regulation jobs? Check all that apply. inspecting meters operating weapons negotiating with foreign officials intervie