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IgorLugansk [536]
3 years ago
15

I need some help with my quiz

Chemistry
2 answers:
Nezavi [6.7K]3 years ago
5 0

Answer:

b)

Explanation:

the data for the average height of the plants in all three trails contains error

Eduardwww [97]3 years ago
4 0

Answer:

I believe the answer is B. The data for the average heights for the plants in all three trials contain errors.

Explanation:

Because if you look at the heights for all three trials you find that they have no pattern and that some have higher plants for each one. This suggests that either there is an error or maybe the fertilizer doesn't effect this specific bean plant.

Hope this helps!

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At 6pm, you see logs piled up for a campfire. Later you see flames and feel heat from it. At 8pm, only smoldering ashes remain.
mr_godi [17]

The process that took place is called oxidation or burning where wood was burnt into ashes.

<h3><u>Explanation:</u></h3>

Wood is an organic compound formed of different types of carbohydrates, proteins and lipids. These components do have carbon oxygen hydrogen as most abundant atoms and also has some amount of nitrogen, phosphorous, and other metal ions like magnesium, calcium etc.

When the logs were burnt, the chemical reaction took place between the atmospheric oxygen and the atoms present in the wood, forming different oxides. As carbon was the most abundant atom present, a huge smoke containing carbon dioxide and carbon monoxide evolved. The hydrogen became the water vapour, and other gases were also formed like nitrogen dioxide, sulphur dioxide etc. These gases went off into atmosphere. The rest that were left behind were mixture of unburnt part of wood as well as the solid metal oxides. There were unburnt particles of carbon mixed with them too.

8 0
4 years ago
What is the mass of 0.25 mol of sulfur atom
tatiyna

Answer:

8.0 g

Explanation:

To convert moles to grams, you need to use the molar mass.  The molar mass of sulfur is 32.06.  The molar mass is the atomic mass of the atom.

(0.25 mol) × (32.06 g/mol) = 8.015 g

Round for significant figures.

8.015 g ≈ 8.0 g

6 0
4 years ago
2×21=how many are there​
MArishka [77]

Answer: 42

Explanation:

8 0
3 years ago
Read 2 more answers
Zinc sulfide + magnesium arsenate → zinc arsenate +
Black_prince [1.1K]

The formula equation for the reaction between zinc sulfide and magnesium arsenate is

3ZnS + Mg₃(AsO₄)₂ → Zn₃(AsO₄)₂ + 3MgS

<h3>What is a chemical equation? </h3>

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

<h3>How to write the formula equation </h3>

Zinc sulfide => ZnS

Magnesium arsenate => Mg₃(AsO₄)₂

Zinc arsenate => Zn₃(AsO₄)₂

Magnesium sulfide => MgS

Zinc sulfide + Magnesium arsenate → Zinc arsenate + Magnesium sulfide

3ZnS + Mg₃(AsO₄)₂ → Zn₃(AsO₄)₂ + 3MgS

Learn more about chemical equation:

brainly.com/question/7181548

3 0
2 years ago
What process causes the banks of the Dead Sea to look the way they do?
alexandr402 [8]
As the warm water holds more salt then cold water the fingers cool and produce crystals of salt that soon rains down to the floor of the ocean
6 0
3 years ago
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