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2 years ago

How many of the planets have an orbital period of less than one Earth year?

1 answer:

8 0

Since orbital period depends on how far you are from the sun, planets closer to the sun have a orbital period less than one earth year.

These planets are Mercury and Venus

You might be interested in

in the process of electricity, what flows through the wires?A) protons B)neutronsC)electronsD)positrons

gizmo_the_mogwai [7]

Electrons is your answer

8 0

3 years ago

Given the following unbalanced equation:

Lorico [155]

<h3>Answer:</h3>

8.01 mol MgO

<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

Moles
Compounds

Stoichiometry

Using Dimensional Analysis
Analyzing Reactions RxN

<h3>Explanation:</h3>

Step 1: Define

[RxN - Unbalanced] Mg + O₂ → MgO

[RxN - Balanced] 2Mg + O₂ → 2MgO

[Given] 8.01 moles Mg

[Solve] moles MgO

Step 2: Identify Conversions

[RxN] 2 mol Mg → 2 mol MgO

Step 3: Stoich

[DA] Set up: $\displaystyle 8.01 \ mol \ Mg(\frac{2 \ mol \ MgO}{2 \ mol \ Mg})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 8.01 \ mol \ MgO$

3 0

2 years ago

What is the term for a solid that forms when two solutions are mixed?

Inessa [10]

Option D

A precipitate is the term for a solid that forms when two solutions are mixed

Explanation:

A solid set from a couple of solutions is termed a precipitate. A precipitate is an unsolved solid that makes when a pair of solutions are fused and react chemically. Unsolvable means that the solid will not melt. When the effect transpires in a liquid solution, the solid developed is denominated the 'precipitate'.

The substance that generates the solid to make is termed the 'precipitant'. Seldom the development of a precipitate symbolizes the existence of a chemical reaction. Precipitation may additionally transpire immediately from a supersaturated solution.

3 0

3 years ago

Read 2 more answers

Which of the following decomposition reactions is/are correct?

Valentin [98]

The generalized reaction for chemical decomposition is: AB → A + B

NaOH is sodium hydroxide. When sodium and water is combined it makes sodium hydroxide and hydrogen

When sodium hydroxide decomposes under thermal decomposition, it breaks down into sodium oxide and water.

Thus, C) 2NaOH Na2O + H2O

4 0

2 years ago

All of the following equations are statements of the ideal gas law except

evablogger [386]

Answer:

The first equation, a. PV = nRT, is not a valid statement of the ideal gas law.

Explanation:

The basic expression for the ideal gas law is:

$pV=nRT$ .......... [Equation 1]

Where:

n is the number of moles of the gas

V is the volume occupied by the gas

p is the pressure exerted by the gas molecules

T is the temperature in absolute scale (Kelvin)

R is the Universal gas constant (0.0821 atm-liter /K-mol or the equivalents in other units)

You can perform different algebraic operations to obtain equivalent equations:

Choice b) Divide equation 1 by T and you get:

pV / T = nR, which is the choice b. from your list.

Choice c) Divide equation 1 by n × V and you get:

p/n = RT / V, which is the choice c. from your list.

Choice d) Divide equation 1 n × T and you get:

pV / (nT) = R, which is the choice d. from your list.

The choice a. p = nRTV states that p and V are in direct relation, when the ideal gas law states that p and V are inversely related, so that equation is wrong.

Conclusion: the choice a, p = nRTV, is not a statement of the ideal gas law.

3 0

2 years ago