All categories

2 years ago

10 points PLS HELP!!!!!!!!!!!!!!!!

Chemistry

2 answers:

lisabon 2012 [21]2 years ago

7 0

Answer:

b aluminum foil have a good day

CaHeK987 [17]2 years ago

5 0

Aluminum foil I think but if not goodluck :)

You might be interested in

4. One gram of of ............... contains one type of atoms. a. iron b. ammonia c. hydrogen chloride d. water

patriot [66]

Answer: hydrogen chloride.

Explanation:

7 0

2 years ago

It is necessary to know the time of day and the position of the Sun or the stars relative to one's longitude line because ____.

allochka39001 [22]

Answer: the longitude line rotates with Earth, 360 degrees in 24 hours.

Explanation: In the old days, the position of the sun was used to tell which time of the day it is. But more modern findings, has shown that the longitude line matters too.

3 0

3 years ago

Please help me ASAP!!!!!!!!!

padilas [110]

Explanation:

chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.

6 0

2 years ago

How many moles are represented by 3.01 x10^24 oxygen atoms?

asambeis [7]

<h3>Answer:</h3>

5.00 mol O₂

<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> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.<u> </u>

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.01 × 10²⁴ atoms O₂

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

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.01 \cdot 10^{24} \ atoms \ O_2(\frac{1 \ mol \ O_2}{6.022 \cdot 10^{23} \ atoms \ O_2})$
Multiply/Divide: $\displaystyle 4.99834 \ mol \ O_2$

<u>Step 4: Check</u>

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

4.99834 mol O₂ ≈ 5.00 mol O₂

4 0

2 years ago

How many molecules are there in 24 grams of FeF(3)?

Burka [1]

The SAME number of molecules are in ANY “mole” of a compound or element. So, you only need to ... 24 g116 g/mol=0.207 moles of FeF3.

5 0

2 years ago

*10 points* PLS HELP!!!!!!!!!!!!!!!!

10 points PLS HELP!!!!!!!!!!!!!!!!