Answer:
The answer is 139.1 g of sodium azide.
Explanation:
To solve this question we need to find first the stoichometry of the reaction to find the moles involved.
1. The balanced formula:
2NaN3 ⇒ 3N2 + 2Na
(important: the nitrogen is a gas, therefore, is always diatomic N2)
2. The moles:
We need to convert the 90 g of N2 into moles to know the relations of amounts between the other compounds in the chemical equation
90 g of N2 x (1 mol of N2/ 28 g of N2) = 3.21 mol of N2
3. Stoichometry:
The relations of the amounts of moles of N2 and NaN3 using the balanced formula
3.21 mol of N2 x (2 mol of NaN3/3 mol of N2) = 2.14 mol of NaN3
4. Moles into grams
then to answer the question we convert the moles value of NaN3 into grams of NaN3
2.14 mol of NaN3 x ( 65 g of NaN3/ 1 mol of NaN3) = 139.1 g of NaN3.
and this is the answer of the question.
The question that will best help the student to classify the material is; "is the material malleable or ductile?"
Generally, materials can be classified as metals or non metals. There are properties that are particular to metals and there are properties that are particular to nonmetals and these properties can be used to identify each one of the materials.
The question that will best help the student to classify the material is; "is the material malleable or ductile?" These metallic properties.
Learn more:
brainly.com/question/1659592
Missing parts;
A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material? A. Is the material malleable or ductile? B. Does the material feel hard to the touch? C. Will the material float in water? D. Does the material feel rough or smooth?
Answer:
The answer is
<h2>0.307 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of box is 345 g
volume = 1125 cm³
The density of the object is
We have the final answer as
<h3>0.307 g/cm³</h3>
Hope this helps you
The ionization energy is the minimum amount of energy required to remove the most loosely bound electron of an isolated neutral gaseous atom or molecule.The first ionisation energy is the energy required to remove one mole of the most loosely held electrons from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+. I hope this helps :3
Answer:
the 18th group or the zero group
