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Usimov [2.4K]
3 years ago
5

There are eight markers in a full set, but Flora and Frank each only have seven markers. Flora is missing the red marker, and Fr

ank is missing the blue marker.
What can they do so that each has a full set of markers?
Chemistry
2 answers:
maw [93]3 years ago
8 0

Answer:

They should share the colors that they are missing

Explanation:

That way, they would both have each color

Lena [83]3 years ago
7 0

Answer:

Put their markers together, now they have each color

Explanation:

You might be interested in
The reliability or reproducibility of a measurement is its <br> ...
Inessa [10]

Answer:

The two most important aspects of precision are reliability and validity. Reliability refers to the reproducibility of a measurement. You quantify reliability simply by taking several measurements on the same subjects!

3 0
2 years ago
Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S 2 ( g ) + C ( s ) − ⇀ ↽ − CS 2 ( g ) K c
bezimeni [28]

Answer:

974.6 grams of CS2 can be prepared.

Explanation:

<u>Step 1:</u> Data given

Kc = 9.40 at 900 K

Moles of S2 = 14.2 mol

volume = 6.30 L

Molar mass of CS2 = 76.14 g/mol

<u>Step 2:</u> The balanced equation:

S2(g)+C(s) ↔ CS2(g)

<u>Step 3:</u> Calculate initial concentrations

Concentration of S2 = moles S2  / volume

Concentration of S2 = 14.2 moles / 6.30 L

Concentration of S2 = 2.25 M (This is the initial concentration)

The initial concentration of C and CS2 is 0M

Since the mole ratio is 1:1:1

There will react X

The concentration of S2 at the equilibrium is: (2.25 -X)M

The concentration of C and CS2 at the equilibrium is X M

<u>Step 4:</u> Calculate concentrations

Since C is not a gas but solid, it doesn't matter for the Kc

Kc = 9.40 = (products)/(reactants) = [CS2(g)]/[S2(g)]

9.40 = X/(2.25-X)

X = 2.034 = [CS2]

[S2] = 2.25 - 2.034 = 0.216

<u>Step 5</u>: Calculate moles of CS2

Moles CS2 = molarity CS2 * volume

Moles CS2 = 2.034 M * 6.30 L

Moles CS2 = 12.8 moles

<u>Step 6:</u> Calculate mass of CS2

Mass CS2 = moles CS2 * molar mass CS2

Mass CS2 = 12.8 moles * 76.14 g/mol

Mass CS2 = 974.6 grams

974.6 grams of CS2 can be prepared.

6 0
3 years ago
How do you measure buoyancy
Usimov [2.4K]
1. First, you must find the volume of the container holding the liquid. (Length x Width x Height)
2. Find the density of the liquid you are submerging the object in. (D = Mass/Volume)
3. Find the force of gravity. (9.81 Newtons/Kilograms)
4. Multiply (Volume x Density x Gravity).

7 0
3 years ago
If 25.00 mL of 6.00 M HCl is transferred by pipet into a volumetric flask and diluted to 5.00 L, what is the molarity of the dil
MakcuM [25]

Answer:

0.03 M

Explanation:

The computation of the molarity of the diluted HCI is given below:

As we know that

(M1) × (V1) = (M2) × (V2)

Now

(M2) = {(M1) × (V1)} ÷ (V2)

or

Molarity of the diluted HCl,(M2) is

= {6 × 25} ÷ 5000

= 0.03 M

7 0
3 years ago
Can someone help me with that please?
True [87]
That is pretty tricky i don’t know
3 0
3 years ago
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