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3 years ago

Which statement describes how heat is transferred by radiation?

Chemistry

1 answer:

puteri [66]3 years ago

7 0

Answer:Sunlight travels through space without the aid of fluids or solids

Explanation: Radiation involves transfer of energy or heat with the help of electromagnetic waves.

For example, radiations from Sun help in transfer of energy or heating of object on which it falls. Like, when radiations are falling on a metal rod then after sometime the rod becomes hot due to absorption of radiations from the Sun.

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If we use 18 moles of H2 how many moles of H2O do we make? Use this chemical equation: 6H2 + O2 → 3H2O

Ilya [14]

<h3>Answer:</h3>

9 mol H₂O

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table
Moles
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis
Analyzing reactions RxN

<h3>Explanation:</h3>

Step 1: Define

[RxN - Balanced] 6H₂ + O₂ → 3H₂O

[Given] 18 mol H₂

[Solve] mol H₂O

Step 2: Identify Conversions

[RxN] 6 mol H₂ → 3 mol H₂O

Step 3: Stoich

[DA] Set up conversion: $\displaystyle 18 \ mol \ H_2(\frac{3 \ mol \ H_2O}{6 \ mol \ H_2})$
[DA] Simplify: $\displaystyle 18 \ mol \ H_2(\frac{1 \ mol \ H_2O}{2 \ mol \ H_2})$
[DA] Divide [Cancel out units]: $\displaystyle 9 \ mol \ H_2O$

3 0

3 years ago

Read 2 more answers

The reaction of hemoglobin with oxygen can be written as follows. hb + o2 â hbo2 if the amount of oxygen available to the blood

riadik2000 [5.3K]

Oxygen is needed to carry out a lot of biochemical processes in the body. If the amount of oxygen available to the blood decreases significantly a lot of things will go wrong in the body. For instance, lack of adequate oxygen will lead to the death of neurons which will eventually leads to brain cells death and irreparable brain damage. Oxygen is also needed for cellular respiration, without respiration, there will not be oxygen for carrying out various cellular activities and this will result into death. Oxygen deprivation will also leads to difficulty in breathing and other associated problems.

3 0

3 years ago

Is this an alpha or beta decay?

4vir4ik [10]

Answer:

alpha decay

Explanation:

5 0

3 years ago

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the elements helium (he), neon (ne), and xenon (xe) are all part of the same on the periodic table plz answer correctly gets a b

bagirrra123 [75]

Noble gas. Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og)

3 0

3 years ago

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Choose the statement below that is TRUE. A weak acid solution consists of mostly insoluble acid molecules. The term 'strong elec

lora16 [44]

Answer: Option (A) is the correct answer.

Explanation:

A weak acid is defined as a substance which dissociates partially into a solvent. This also means that most of the molecules of a weak acid solution remain insoluble in nature.

A solution in which solute particles completely dissociate into ions in a solvent is known as a strong electrolyte.

Whereas a solution in which solute particles partially dissociate into ions is known as a weak electrolyte.

A molecular compound is a covalent compound and as like dissolves like. So, molecular compounds are not soluble in polar solvent like water.

Therefore, we can conclude that the true statement is weak acid solution consists of mostly insoluble acid molecules.

5 0

3 years ago