Questions and Answers

- 1.
### Write out a balanced chemical equation for sulfur reacts with chlorine forming disulfur dichloride. Do not seperate your answer with spaces and in place of an arrow, use an equals (=) sign. Keep in mind, an arrow and an equals sign are NOT the same.

Explanation

The correct answer is 2S + Cl2 = S2Cl2. This equation represents the balanced chemical reaction between sulfur and chlorine to form disulfur dichloride. The coefficients in front of each compound indicate the number of molecules or moles involved in the reaction, ensuring that the equation follows the law of conservation of mass.Rate this question:

- 2.
### What does combustion yield? Hint: start your answer with water. Do not seperate any part of your answer with spaces.

Explanation

Combustion yields H2O + CO2, CO2 + H2O, CO2 + H2O, CO2 + H2O, C02 + H20, C02 + H20, H20 + C02, and H20 + C02.Rate this question:

- 3.
### How many moles are there in 9.05x10^25 atoms of boron. Answer in three significant figures and scientific notation. Be sure to label atoms of Boron.

Explanation

The answer options provided all express the same value, which is 1.50x10^2, in different formats. This value represents the number of atoms of boron. The scientific notation format, 1.50x10^2, indicates that there are 1.50 multiplied by 10 raised to the power of 2 atoms of boron. This is equivalent to 150 atoms of boron. The "rp" in the answer options likely stands for "representative particles," which includes both atoms and molecules. Therefore, all the answer options correctly state that there are 1.50x10^2 atoms of boron.Rate this question:

- 4.
### Write this number in scientific notation with three significant figures (do not put any space between any component of the equation). Be sure to use this carrot (^) key to indicate an exponent. Use an x to indicate multiplication. 4898000

Explanation

The given number, 4898000, needs to be written in scientific notation with three significant figures. To do this, we move the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, we move the decimal point four places to the left, resulting in 4.898000. To maintain three significant figures, we round this number to 4.90. Finally, we express this number in scientific notation by multiplying it by 10 raised to the power of the number of places the decimal point was moved. Since we moved the decimal point four places to the left, the exponent is 6. Therefore, the number in scientific notation is 4.90 x 10^6.Rate this question:

- 5.
### Find the mole-to-mole ratio of this equation. Be sure to seperate your numbers with colon ( : ) signs. SeCl6 + O2 → SeO2 + Cl2

Explanation

The mole-to-mole ratio for the given equation is 1:1:1:3. This means that for every 1 mole of SeCl6, 1 mole of O2, 1 mole of SeO2, and 3 moles of Cl2 are produced or consumed in the reaction.Rate this question:

- 6.
### Find the mole-to-mole ratio of this equation. Be sure to seperate your numbers with colon ( : ) signs. P4 + O2 → P2 O3

Explanation

The mole-to-mole ratio of the given equation is 2:3:2. This means that for every 2 moles of P4, 3 moles of O2 are required and 2 moles of P2O3 are produced. This ratio is determined by the coefficients of the balanced equation, which indicate the relative number of moles of each substance involved in the reaction.Rate this question:

- 7.
### If given 427 grams of H3 PO4 and 415 grams of KOH (both of which are reactants), find the mole-to-mole ratio (be sure to seperate each number with a colon ( : )), amount of product produced, and prove LOCOM (all you need to type is the sum of the reactants and the sum of the products with an equall sign in between). Please enter all answers numerically, rounded to three significant figures (not in scientific notation) with proper unit labeling (i.e. grams of H2O). Seperate each answer with a comma and a space.

Explanation

The given answer provides the mole-to-mole ratio of the reactants and products, which is 1:3:3:1. This means that for every 1 mole of H3PO4, there are 3 moles of KOH, 3 moles of HOH (water), and 1 mole of K3PO4 produced. The answer also states that 133 grams of HOH and 523 grams of K3PO4 are produced as a result of the reaction. Additionally, the answer proves the law of conservation of mass (LOCOM) by showing that the sum of the reactants (427 grams of H3PO4 + 415 grams of KOH) is equal to the sum of the products (657 grams).Rate this question:

- 8.
### Which is more reactive: Zinc or Iron?

Explanation

Zinc is more reactive than iron because it has a lower ionization energy and a higher tendency to lose electrons. This means that zinc is more likely to undergo chemical reactions and form compounds compared to iron. Additionally, zinc has a higher electronegativity, which means it can attract electrons more strongly and form more stable compounds. Therefore, zinc is considered to be more reactive than iron.Rate this question:

- 9.
### How many significant figures are in the 0.000374? (Enter the number numerically)

Explanation

The number 0.000374 has three significant figures. The zeros before the 3 and after the 7 are not significant because they are leading and trailing zeros. The significant figures in this number are 3, 7, and 4.Rate this question:

- 10.
### How many significant figures are in the 298001000? (Enter the number numerically)

Explanation

The number 298001000 has six significant figures. Significant figures are the digits in a number that carry meaning in terms of its precision. In this case, all the digits from 2 to the last 0 are significant, giving a total of six significant figures.Rate this question:

Hund's Rule Demystified: Electron Configuration Challenge
Hund's Rule Demystified: Electron Configuration Challenge

The Pauli Exclusion Principle Quiz: Test Your Quantum Knowledge
The Pauli Exclusion Principle Quiz: Test Your Quantum Knowledge

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