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3 years ago

Which of the choices below gives a true example of how a natural resource can be renewed?

Chemistry

1 answer:

noname [10]3 years ago

7 0

You didn't write the choices??

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Convert this number to its standard form 4.05x10

klasskru [66]

The answer is 40.5.

Standard form is in answered or not in a different form.

So, you must solve this.

4.05 * 10 = 40.5

Have a great day :) Let me know if you need help with anything else!

6 0

3 years ago

In two or more complete sentences explain how to balance the chemical equation and classify its reaction type. ___NaI + ___Pb(SO

Fiesta28 [93]

The balance would be 4nai + pb(so4)2 --> pbi4+ 2na2so4

7 0

3 years ago

Read 2 more answers

If an object has a density of 25 g/cm and a mass of 100 grams, what is its volume? O 40 cm3 0.25 cm 4 cm3 125 cm3

xz_007 [3.2K]

<h3>Answer:</h3>

4 cm³

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

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

<u>Chemistry</u>

Density = Mass over Volume

D = m/V

<h3>Explanation:</h3>

<u>Step 1: Define</u>

D = 25 g/cm³

m = 100 g

<u>Step 2: Solve for </u><em><u>V</u></em>

Substitute variables [D]: $\displaystyle 25 \ g/cm^3 = \frac{100 \ g}{V}$
Multiply <em>V</em> on both sides: $\displaystyle V(25 g/cm^3) = 100 \ g$
Isolate <em>V</em>: $\displaystyle V = 4 \ cm^3$

8 0

3 years ago

The concentration of a certain sodium hydroxide solution was determined by using the solution to titrate a sample of potassium h

7nadin3 [17]

Answer:

0.022 M

Explanation:

The molarity is the number of mol solute divided by the volume of solution in liters. Since we are told there is only one acidic hydrogen in KHP the reaction is a 1 to 1 with sodium hydroxide, We then calculate the moles of sodium hydroxide required to react with the moles of KHP and proceed to calculate the molarity of the NaOH solution:

mol KHP: 0.1082 g x 1 mol/204.22 g = 0.00053 mol KHP

0.00053 mol KHP x 1 mol Naoh/1 mol KHP = 0.00053 mol NaOH

Molarity of the solution : 0.00053 mol NaOH / 0.02346 L = 0.022 M

note: The volume of sodium hydroxide needed to be converted to liters by definition of molarity.

4 0

3 years ago

PLEASE HELP I WILL GIVE BRAINLIEST

stellarik [79]

Answer: YES!

Explanation:

Ox2 Co2 Hydrogen and Corossion 3

3 0

3 years ago