All categories

1 year ago

1. A contour line represents a single equal elevation: that is, all points on the same contour line have the same elevation.

Chemistry

1 answer:

Lady bird [3.3K]1 year ago

3 0

The answer is hard to give without any information.

You might be interested in

what is the anode of a galvanic cell made with zinc and aluminum aluminum metal zinc metal aluminum ions zinc ions

emmasim [6.3K]

Answer:

The Anode of a Galvanic cell made with Zinc and Aluminum is Aluminum metal

Explanation:

A P E X states that the answer is aluminum metal

6 0

3 years ago

Read 2 more answers

Determine the empirical formula of a compound containing 47.37 grams of carbon, 10.59 grams of hydrogen, and 42.04 grams of oxyg

inysia [295]

Answer:

Mass of C = 47.37g

Mass of H = 10.59g

Mass of O = 42.04g

The total mass of these elements is 100g, taking a proportion of their molar masses.

C = 47.37/12= 3.95

H = 10.59/1 = 10.59

O = 42.04/16= 2.63.

Dividing through with the smallest proportion which is 2.63

C=3.95/2.63 = 1.5

H =10.59/2.63 =4

O = 2.63/2.63= 1

Multiplying through by 2 to get a whole number.

C = 1.5x2 = 3

H= 4x2 = 8

O = 1x2= 2

The empirical formula is C3H6O2

(Empirical formula)n= molecular mass

(C3H8O2)n =228.276

(12x3 +8+16x2)n= 228.276

76n = 228.276

n = 228.276/76

n = 3

Molecular formula = Empirical formula

=(C3H8O2)3 = C9H24O6

The molecular formula is C9H24O6

4 0

3 years ago

Why can color alone be used to identify most minerals?

VladimirAG [237]

<span>Because a lot of minerals have the same color</span>

3 0

2 years ago

How many moles of Ca are in 3.75 x 10^25 atoms of Ca?

ioda

<h3>Answer:</h3>

62.3 mol Ca

<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>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.75 × 10²⁵ atoms Ca

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

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.75 \cdot 10^{25} \ atoms \ Ca(\frac{1 \ mol \ Ca}{6.022 \cdot 10^{23} \ atoms \ Ca})$
Multiply/Divide: $\displaystyle 62.2717 \ mol \ Ca$

<u>Step 4: Check</u>

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

62.2717 mol Ca ≈ 62.3 mol Ca

7 0

2 years ago

What radioactive emissions is the most penetrating?

Bumek [7]

Alpha Particles hope this helps

5 0

3 years ago