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3 years ago

How many moles in 120 Calcium

1 answer:

4 0

Molar mass Ca = 40.078 g/mol

Therefore:

1 mole Ca ---------- 40.078 g
? moles Ca --------- 120 g

120 x 1 / 40.078 => 2.994 moles

You might be interested in

How many atoms are in 10.1 g Ne

LekaFEV [45]

Answer:

3.01 × 10²³ atoms Ne

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Tables
Moles

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

Identify

[Given] 10.1 g Ne

[Solve] atoms Ne

Step 2: Identify Conversions

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

[PT] Molar Mass of Ne: 20.18 g/mol\

Step 3: Convert

[DA] Set up: $\displaystyle 10.1 \ g \ Ne(\frac{1 \ mol \ Ne}{20.18 \ g \ Ne})(\frac{6.022 \cdot 10^{23} \ atoms \ Ne}{1 \ mol \ Ne})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 3.01398 \cdot 10^{23} \ atoms \ Ne$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

3.01398 × 10²³ atoms Ne ≈ 3.01 × 10²³ atoms Ne

4 0

3 years ago

HELP ME ASAPPP PLSSSSS

Dmitry_Shevchenko [17]

C! The clownfish hide in the sea anemones for protection

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2 years ago

Which structure could a scientist look for in a plant that would identify it as a club moss rather than a liverwort?

Marianna [84]

<h3>Answer;</h3>

Phloem

<h3>Explanation;</h3>

Club moss plant belongs to the the family Lycopodiaceae, Lycophyte includes any spore-bearing vascular plant.
Liverworts on the other hand are bryophytes which belongs to the division bryophyta. Bryophytes are small, non-vascular plants which includes mosses, hornworts and liverworts.
Vascular plants contain vascular tissues which play an important role of transportation in plants. The major vascular tissues are phloem and xylem. Non-vascular plants on the other hand lacks the vascular tissues for transportation of substances.

7 0

3 years ago

Read 2 more answers

For her school Science Fair, Alyssa designs an experiment to learn more about erosion. Her experimental set up is shown below. W

shutvik [7]

Answer:

if I am going to answer I need the set up

Explanation:

please show the set up and I will answer the question

8 0

2 years ago

What is the unit of measurement for mass?

Licemer1 [7]

Grams. It is a smaller unit.

4 0

3 years ago