Answer:
The correct answer is 0.11 mol O₂
Explanation:
The chemical equation for the reaction of acetylene (C₂H₂) with O₂ to produce carbon dioxide (CO₂) and water (H₂O) is the following:
2 C₂H₂(g) + 5 O₂(g) → 4 CO₂(g) + 2 H₂O(g)
The chemical equation is balanced : with the proper estequiometrical coefficients. According to this, 2 moles of C₂H₂ reacts with 5 moles of O₂ to give 4 moles of CO₂ and 2 moles of H₂O.
In order to calculate how many moles of O₂ are needed to produce 0.085 moles of CO₂, we multiply the 0.085 moles of CO₂ by the factor 5 moles O₂/4 moles CO₂ (because 4 moles of CO₂ are produced by 5 moles of O₂ according to the chemical equation):
0.085 moles CO₂ x (5 moles O₂/4 moles CO₂) = 0.10625 moles O₂ = 0.11 moles O₂
The number of boxes is calculated by dividing the
total mass of hardware boxes by 1.00 kg
<h3>What is a hardware?</h3>
A hardware is a physical component of a system that can be touched and felt.
Because hardware are physical components, they always have a given mass.
Assuming, several hardware each of mass 1.00 kg is available to be chosen from.
Also, assuming that the sum total of the mass of all the hardware is known.
The number of boxes can be calculated as follows:
- total mass of hardware/1.00 kg
Therefore, the number of boxes is obtained by dividing the sum of the mass of the boxes by 1.00 kg.
Learn more about hardware and mass at: brainly.com/question/25698914
The image, blanks and options are missing in the question. So the image is attached below and the complete question is:
Describe the celestial object in the image.
The object is called________ a because it is producing _______ and has not yet ________ .
First Blank: A.Meteor B.Meteorite C.Meteoroid
Second Blank: A. a streak of light B. An orange Horizon C. A star- Filled sky
Third Blank: A. Reached earths atmosphere B. Struck Earth C. Completed an orbit
Answer:
First Blank - A. Meteor
Second Blank - A. a streak of light
Third Blank - A. Reached earths atmosphere
Explanation:
The given image shows celestial object called meteor.
The meteor is often called shooting star as it produces a streak of light. When a meteoroid reaches Earth's atmosphere, it experiences a friction which allows the meteoroid to burn up and produce a streak of light in the sky.
Hence, the correct answer for blanks is Meteor, a streak of light and Reached earths atmosphere.
Answer:
Element Atomic Number Atomic Mass
Nickel 27 58.6934
Cobalt 28 58.9332
Copper 29 63.546
Zinc 30 65.39
Explanation:
