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4 years ago

A diatomic molecule is one that is made of only two different elements ? true or false

2 answers:

5 0

More specifically two atoms but this is indeed true. The elements do not need to be different but there can only be two atoms. The prefix indicates the quantity of two. Di - means "of two".

tia_tia [17]4 years ago

5 0

Diatomic molecules typically refer to atoms that come in pairs. For example, you will never find a lone oxygen naturally. In nature it is always found as O2.

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What mass of YCL3 forms when 10.0 grams of each reactant are combined?

Triss [41]

The mass of $YCl_3$ that would be formed will be 18.22 grams

<h3>Stoichiometric calculations</h3>

Let us first look at the balanced equation of the reaction:

$2Y + 3Cl_2 --- > 2YCl_3$

The mole ratio of Y to $Cl_2$ is 2:3.

Mole of 10.0 grams of Y = 10/88.9 = 0.11 moles

Mole of 10.0 grams $Cl_2$ = 10/71 = 0.14 moles

3/2 of 0.11 = 0.165. Thus, $Cl_2$ is limiting in availability.

Mole ratio of $Cl_2$ and $YCl_3$ = 3:2

Equivalent mole of $YCl_3$ = 2/3 x 0.14 = 0.093 moles.

Mass of 0.093 moles $YCl_3$ =0.093 x 195.26 = 18.22 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

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5 0

2 years ago

Calculate the volume(in L), at STP, of carbon dioxide produced by the complete combustion of 6.75 lbs of charcoal.

gtnhenbr [62]

535.8 L volume(in L), at STP, of carbon dioxide produced by the complete combustion of 6.75 lbs of charcoal.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Given:

$C(s) + O_2(g)$ ⇒ $CO_2(g)$

1 mole of $CO_2(g)$ is formed from 1 mole of charcoal, that means 1 mole of $CO_2(g)$ is formed from 12 g of charcoal.

1 lbs = 453.592 grams

6.75 lbs = 6.75 x 453.592 =3061.746g

So, $CO_2(g)$ formed from 3061.746g of charcoal is:

= $\frac{1}{12}$ x 3061.746g

=255.14 mol.

Now, at STP, the volume of 1 mol of gas =22.4 L

Volume of 255.14 mol of $CO_2(g)$ = 255.14 x 22.4 L

Volume of 255.14 mol of $CO_2(g)$ = 535.8 L

Hence, 535.8 L volume(in L), at STP, of carbon dioxide produced by the complete combustion of 6.75 lbs of charcoal.

Learn more about the ideal gas here:

brainly.com/question/27691721

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3 0

2 years ago

Bobota

navik [9.2K]

Answer:

chemical stability

Explanation:

g goodnight

4 0

3 years ago

Now I know that to measure earthquakes, geologists use seismic waves to determine....

yarga [219]

Geologists use seismic waves to learn about and establish the structure of the Earth’s interior.

7 0

3 years ago

Phosphorus is obtained primarily from ores containing calcium phosphate.

ladessa [460]

Answer:

33.7 kg

Explanation:

Let's consider calcium phosphate Ca₃(PO₄)₂.

The molar mass of Ca₃(PO₄)₂ is 310.18 g/mol and the molar mass of P is 30.97 g/mol. In 1 mole of Ca₃(PO₄)₂ (310.18 g) there are 2 × 30.97 g = 61.94 g of P. The mass of Ca₃(PO₄)₂ that contains 3.57 kg (3.57 × 10³ g) of P is:

3.57 × 10³ g × (310.18 g Ca₃(PO₄)₂/61.94 g P) = 1.79 × 10⁴ g Ca₃(PO₄)₂

A particular ore contains 53.1% calcium phosphate. The mass of the ore that contains 1.79 × 10⁴ g of Ca₃(PO₄)₂ is:

1.79 × 10⁴ g Ca₃(PO₄)₂ × (100 g Ore/ 53.1 g Ca₃(PO₄)₂) = 3.37 × 10⁴ g Ore = 33.7 kg Ore

8 0

3 years ago