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Len [333]
3 years ago
8

All of the following are physical changes except

Chemistry
1 answer:
Stells [14]3 years ago
6 0

Answer:

rocket fuel burning i think

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Help please I don't understand
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Try looking at the question a little bit harder.

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What are the 5 types of chemical reactions?
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Combination or Synthesis Reaction. A combination of synthesis reaction is one. where a new product is synthesized by combination of two or three reactants.

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4 years ago
All man-made and most carbon-based compunds are___ . 1. organic 2.inorganic
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2. Inorganic

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What devices will you use to measure the mass and the volume in this experiment? (density)
bekas [8.4K]

Answer:

Methods for determining or delivering precise volumes include volumetric pipets and pycnometers; less precise methods include burets, graduated cylinders, and graduated pipets. In this experiment, you will measure masses and volumes to determine density. Four different metal cylinders are investigated.

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3 years ago
Calculate the volume of 5.00 mol of helium at 120C and 1520 mm Hg
levacccp [35]

Answer:

80.7 L

Step-by-step explanation:

This looks like a case where we can use the Ideal Gas Law to calculate the volume.

pV = nRT       Divide both sides by p

V = (nRT)/p

=====

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n = 5.00 mol

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T = (120 +273.15) K = 393.15K

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=====

Calculation:

V = (5.00 × 0.082 06 × 393.15)/2.00

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