1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vampirchik [111]
3 years ago
9

Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooke

d and the skewer feels warm. What most likely happened?
The fire heated the surrounding air, which cooked the marshmallow.
The heat generated from the marshmallow flowed in the form of thermal energy to the skewer and fire.
The heat from the skewer cooked the marshmallow.
Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.
Chemistry
2 answers:
natita [175]3 years ago
8 0

Answer:

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

Explanation:

He holds a marshmallow on a metal skewer over a fire. A few seconds late, the marshmallow is cooked and the skewer feels warm.

azamat3 years ago
4 0

Answer:

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

Explanation:

You might be interested in
Jason combines the two intermediate steps shown.
Snowcat [4.5K]

Answer:

Place two of them as reactants.

Explanation:

  • We have the two steps of reactions:

1) N₂(g ) + O₂(g) → 2NO(g).

2) 2NO(g )+ O₂(g) → 2NO₂(g).

  • Adding the two equation with cancelling the intermediate (NO), we get:

<em>N₂(g ) + 2O₂(g) → 2NO₂(g).</em>

<em></em>

NO is cancelled out because there is one in each equation in the products side in eq. 1 and in oriduct side in eq. 2.

<em>So, we place two of oxygen as reactants.</em>

7 0
3 years ago
Read 2 more answers
How do you calculate the abundance of an atom and the relative atomic maths? As simply as possible?
chubhunter [2.5K]
By looking it up on the periodic table
7 0
3 years ago
What is the percent by mass of potassium in KFe(CN)?
vladimir1956 [14]

Answer:

Explanation:

1. Add the atomic mass of all the elements.

39+55.8+12+14= 120.8

2.Divide atomic mass of potassium by total atomic mass

39/120.8= .323

2. Multiply by 100

.323*100= %32.3 %32.3

8 0
3 years ago
What are diatomic molecules and are they compounds? PLEASE ANSWER ASAP!!
Fantom [35]

Answer:

Diatomic molecules consist of two atoms that are chemically bonded. The two atoms can be the same or different chemical elements. As for whether or not they are compounds, there is not technically an answer. This is because all compounds are molecules, but not all molecules are compounds. For example diatomic molecules that comprise the chemical compounds nitric acid, carbon monoxide, and hydrogen chloride are made up of two different elements.  As you can see, most diatomic molecules are not made up of the same kind of elements and not every diatomic molecule comprises a chemical compound.

hope this helps :)

Explanation:

4 0
2 years ago
What is the volume of 0.80 grams of o2 gas at stp? (5 points) group of answer choices 0.59 liters 0.56 liters 0.50 liters 0.47 l
Vladimir [108]

Answer:

0.56L

Explanation:

This question requires the Ideal Gas Law:  PV=nRT where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the Ideal Gas constant, and T is the Temperature of the gas.

Since all of the answer choices are given in units of Liters, it will be convenient to use a value for R that contains "Liters" in its units:R=0.0821\frac{L\cdot atm}{mol\cdot K}

Since the conditions are stated to be STP, we must remember that STP is Standard Temperature Pressure, which means T=273.15K and P=1atm

Lastly, we must calculate the number of moles of O_2(g) there are.  Given 0.80g of O_2(g), we will need to convert with the molar mass of O_2(g).  Noting that there are 2 oxygen atoms, we find the atomic mass of O from the periodic table (16g/mol) and multiply by 2:  32g\text{ }O_2=1mol\text{ }O_2

Thus, \frac{0.80g \text{ }O_2}{1} \frac{1mol\text{ }O_2}{32g\text{ }O_2}=0.25mol\text{ }O_2=n

Isolating V in the Ideal Gas Law:

PV=nRT

V=\frac{nRT}{P}

...substituting the known values, and simplifying...

V=\frac{(0.025 mol \text{ }O_2)(0.0821\frac{L\cdot atm}{mol \cdot K} )(273.15K)}{(1atm)}

V=0.56L \text{ } O_2

So, 0.80g of O_2(g) would occupy 0.56L at STP.

5 0
2 years ago
Read 2 more answers
Other questions:
  • An organic acid is composed of carbon (45.45%), hydrogen (6.12%), and oxygen (48.44%). Its molar mass is 132.12 g/mol. Determine
    5·2 answers
  • two factors that determine wether a molecule is polar are the types of atoms in the molecule and the ____ of the molecule
    6·1 answer
  • Which of these is a physical property
    9·2 answers
  • Volcanoes located at subduction zones tend to release lava high in?
    11·2 answers
  • A compound is formed by the reaction of nitrogen with oxygen gas. Can you predict the formula of the compound formed? Explain.
    9·1 answer
  • What is non lustrous ?
    5·2 answers
  • How does dermal tissue play a key role in transpiration?
    13·1 answer
  • PLEASEEE HELP me on CHEMISTRY!! Will give brainliest!
    15·1 answer
  • Asp plz do right now
    8·1 answer
  • How much did Britain’s royal society of chemistry estimate that it would cost to make Benedict cumberpatch
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!