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2 years ago

Suppose you would like to

Chemistry

1 answer:

nika2105 [10]2 years ago

6 0

Answer:

The amount of glue used, the material and how much of it you're using every time you test each glue, the temperature of the room, etc.

Explanation:

There are many answers to this question but think about the obvious ones first. Obviously you'll need to use the same amount of glue every time you're testing each type. The material used is also important and how much of the material you're using because different types of glue can work better with different materials, as well as how much material you're using. The temperature of the room can affect how well each glue holds up because often glue dries easier/quicker with heat, so in your experiment to make it fair you need to make sure that each glue is tested in the same environment.

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What is the density of an object with the density of 3 when cut in half?

anyanavicka [17]

The density is 3 because the density remains the same.

8 0

3 years ago

Substitute natural gas (SNG) is a gaseous mixture containing CH4(g) that can be used as a fuel. One reaction for the production

Lynna [10]

Answer:

ΔH° of the reaction is -747.54kJ

Explanation:

Based on gas law, it is possible to find the ΔH of a reaction using ΔH of half reactions.

Using the reactions:

(1) C(graphite) + 1/2O₂(g) → CO(g) ΔH° = -110.5 kJ

(2) CO(g) + 1/2O₂(g) → CO₂(g) ΔH° = -283.0 kJ

(3) H₂(g) + 1/2O₂(g) → H₂O(l) ΔH° = -285.8 kJ

(4) C(graphite) + 2H₂(g) → CH₄(g) ΔH° = -74.81 kJ

(5) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) ΔH° = -890.3 kJ

The sum of 4×(4) + (5) gives:

4C(graphite) + 8H₂(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -74.81 kJ ×4 - 890.3 kJ = -1189.54kJ

Now, this reaction - 4×(1) gives:

4CO(g) + 8H₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -1189.54kJ - 4×-110.5 = -747.54kJ

Thus ΔH° of the reaction is -747.54kJ

3 0

3 years ago

What is the correct name for Sn3(PO4)2

beks73 [17]

It’s Tin (II) Phosphate!! (Hope this helps!)

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2 years ago

What is an isotope and what is atomic structure?

Anarel [89]

Answer:

Isotopes are atoms with the same number of protons, but different numbers of neutrons.

Explanation:

Ex.

Ne 20/10

Ne 21/10

Ne 22/10

*the number of protons in an atom must stay the same or the element itself will change drastically

8 0

3 years ago

Discuss how varying ph of water affects the soil ph which in turn would affect the durability properties of reinforced concrete

galina1969 [7]

Although soils are capable of resisting pH changes, there are some circumstances where the pH of the water can result in alterations.

<h3>Will Soil pH Be Affected by Water pH?</h3>

The texture of soil affects how susceptible it is to the pH of the surrounding water. Smaller soil particles, such as clays and clay loams, have a greater impact than larger, sandier soils. There are more colloids, which are extremely minute particles, in fine-textured soils. Positively charged ions are maintained at these colloids. The cation exchange capacity of a soil refers to its capacity to hold onto these ions. Ions on the colloidal particles trade places with ions in the soil solution. The pH of the soil is less affected by negative ions in the soil solution.

Learn more about The effect of pH here:-

brainly.com/question/16956829

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5 0

2 years ago