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4 years ago

Fill in the blank. 9.31x103 = [ ? ]x 105

Chemistry

1 answer:

Igoryamba4 years ago

6 0

Answer:

The answer is 0.0931 × 10^5

Hope this helps.

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Calculate the molarity of a potassium hydroxide solution if 25.0 mL of this solution was completely neutralized by 23.3 mL of 0.

Mice21 [21]

4.564 their go the answer

5 0

3 years ago

Give 3 property's of an apple <br><br> (density)

erastovalidia [21]

Answer:

It's a fruit. It's red, yellow or green. It's edible.

Explanation:

3 0

3 years ago

How many moles are in 60.0 grams of water?

Mashutka [201]

<h3>Answer:</h3>

3.33 mol H₂O

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

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

60.0 g H₂O (Water)

<u>Step 2: Identify Conversions</u>

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 60.0 \ g \ H_2O(\frac{1 \ mol \ H_2O}{18.02 \ g \ H_2O})$
Multiply: $\displaystyle 3.32963 \ mol \ H_2O$

<u>Step 4: Convert</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

3.32963 mol H₂O ≈ 3.33 mol H₂O

5 0

3 years ago

QUESTION 4

Greeley [361]

Answer:

B) 2

Explanation:

There are two significant figures in given measurement,

2, 0

Significant figures:

1= The given measurement have four significant figures 1534.

2= All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

3= Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

4= Zero between the non zero digits are consider significant like 107 consist of three significant figures.

5= The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

7 0

3 years ago

HELP PLEASE 40.0 grams of salt are dissolved in 100. grams of water. The solution is how many grams?

garik1379 [7]

Answer:

The mass of the solution is 140 grams.

Explanation:

The mass of the solution is given by the sum of the solute's mass and the solvent's mass:

$m_{sol} = m_{ste} + m_{svt}$

Where:

$m_{sol}$ : is the mass of the solution

$m_{ste}$ : is the mass of the solute

$m_{svt}$ : is the mass of the solvent

The solute is the salt (40.0 g) and the solvent is the water (100 g), so:

$m_{sol} = m_{ste} + m_{svt} = 40 g + 100 g = 140 g$

Therefore, the mass of the solution is 140 grams.

I hope it helps you!

5 0

3 years ago