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3 years ago

THIS IS A SCIENCE QUESTION

Chemistry

2 answers:

Viktor [21]3 years ago

5 0

Answer:

Explanation:

Think of it like an hot air balloon

Hot air makes it rise and cool air sinks it downwards

MissTica3 years ago

4 0

Answer:

Explanation:

Hot air is less dense therefore it rises. Cold air is more closely packed therefore it is more dense. Less dense things rise while more dense things sink.

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Distance from shore (in cm) Depth

Maurinko [17]

Answer:

Its 25

Explanation:

Njnnnc

6 0

3 years ago

Write the chemical equation for the reaction whose enthalpy change is the standard enthalpy of formation of fructose, C6H12O6(s)

ziro4ka [17]

Answer:

$6 C(s) + 6_{H2}(g) + 3_{O2}(g)$

Explanation:

The chemical equation of the reaction is as follows

According to the question, data provided in the question is shown below:

$C_6H_12O_6$

The C = Carbon and its standard state is Graphite C(s)

The H = Hydrogen and its standard state is $H_2$ (s)

The O = Oxygen and its standard state is $O_2$ (s)

Now the chemical equation for the reaction is

$6 C(s) + 6_{H2}(g) + 3_{O2}(g)$

5 0

4 years ago

A sample of black mineral hematite, an oxide of iron found in many iron ores, contains 34.97g of iron and 15.03g of oxygen. what

Vanyuwa [196]

The empirical formula : Fe₂O₃

<h3>Further explanation</h3>

Given

34.97g of Iron

15.03g of Oxygen

Required

The empirical formula

Solution

Mol ratio :

Fe(Iron) : 34.97 g : 56 g/mol = 0.624

O(Oxygen) : 15.03 g : 16 g/mol = 0.939

Divide by 0.624 :

Fe : O = 1 : 1.5

Fe : O = 2 : 3

8 0

3 years ago

What happens when nitrogen fills its valence shell?

Sauron [17]

The right answer is D. three electrons are gained, creating N-3

Nitrogen has 5 electrons in it's valence shell and octet rule states that the valence shell must have 8 electrons. To satisfy that, Nitrogen gains 3 electrons that are negatively charged.Therefore, it gets a negative charge.

5 0

3 years ago

Read 2 more answers

Calculate the inner diameter of the steam tube between the boiler and the high pressure turbine if the average velocity of the s

stich3 [128]

Answer:

The inner diameter of the steam tube is 0.1185 m.

Explanation:

$m=\rho \times A\times v=\frac{1}{V}\times A\times v$