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
VARVARA [1.3K]
3 years ago
8

Calculate the amount of energy required to increase the temperature of 18.0 go vapor water from 275.0 degrees * C to 385 degrees

* C (Specific heat of water)
Chemistry
1 answer:
Archy [21]3 years ago
8 0

Answer:

<u>The amount of energy required to increase temperature 275°C to 385°C is ΔQ =3.95208kJ</u>

Explanation:

Given :

  • <em>The mass of the water vapour is 18 g</em>
  • <em>The initial temperature : 275°C</em>
  • <em>The final temperature : 385°C</em>

According to the formula :

ΔQ = m*s*ΔT

Where ,

  • <em>ΔQ is the heat supplied</em>
  • <em>m is the mass of the substance (water vapour) = 18g</em>
  • <em>s is the specific heat of the substance ( water vapour) = 1.996Jg^{-1}K^{-1}</em>
  • <em>ΔT is the change in temperature =385-275=110K</em>

∴

ΔQ = 18*1.996*110\\=3952.08J

⇒ΔQ =3.95208kJ

You might be interested in
aqueous hydrochloric acid HCl will react with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid wat
aleksandr82 [10.1K]

Answer:

Explanation:

HCl    + NaOH     =    NaCl    +     H₂O.

1 mole   1 mole           1 mole          1 mole

6.93  g of hydrochloric acid = 6.93 / 36.5 = .189 mole of HCl

2.4 g of NaOH = 2.4 / 40 =  .06 mole of NaOH

NaOH is in short supply so it is the limiting reagent .

1  mole of NaOH reacts with 1 mole of HCl to give 1 mole of Water

.06 mole of NaOH will react with .06 mole of HCl to give .06 mole of water

Water formed = .06 mole

= .06 x 18 = 1.08 g

= 1.1 g

4 0
2 years ago
This is an impossible formula. Pretend it is real.
guapka [62]

There are eight moles of oxygen atoms  in 1 mole of Mn_{9}(ClO_{4}) _{2}.

<h3>What is the number of moles of oxygen atoms?</h3>

We know that a compound is composed of atoms. The atoms that make up the molecule are chemically combined. It is usual that the number of atoms in the compound would correspond with the chemical formula.

Now we have the compound  Mn_{9}(ClO_{4}) _{2}. In one mole of the compound we have;

  • 9 Moles of manganese atom
  • 2 moles of chlorine atom
  • 8 moles of oxygen atom

Thus, there are eight moles of oxygen atoms  in 1 mole of Mn_{9}(ClO_{4}) _{2}.

Learn more about atoms;brainly.com/question/1566330

#SPJ1

7 0
1 year ago
Woodpeckers find insects to eat by pecking holes in trees with their beaks. One day, a woodpecker finds a particular tree that o
bixtya [17]

Answer:

1. Reflex Conditioning

Explanation:

Conditioning is an aspect of learning where a stimulus works effectively in producing a response from an organism. This response becomes regular given the type of reinforcement that is administered to the organism. The reinforcement is usually a reward that is given to the organism.

This is what is observed in the woodpecker.  The stimulus or reinforcement which proves effective in producing a continuous response  from the woodpecker is the abundant supply of the birds favorite bugs. This reinforcement makes it possible for the woodpecker to become conditioned towards returning to the tree.

4 0
3 years ago
Workout the formula for:<br>Magnesium Bromide <br>Potassium Chloride ​
madam [21]
Magnesium bromide= MgBr2
Potassium chloride= KCl
8 0
3 years ago
In terms of valence electrons, explain why metals form positive ions.
diamong [38]

Answer:

Explanation:

Metal elements form positively charged ions called cations because they are located on the left side of the periodic table These elements all have valence electrons in an s orbital. These electrons are relatively easy for the atom to lose to achieve a stable octet of electrons in its outermost energy shell.

8 0
3 years ago
Other questions:
  • What is the difference between a group and a period
    5·2 answers
  • The activation energy for the diffusion of carbon in chromium is 111,000 J/mol. Calculate the diffusion coefficient at 1100 K (8
    7·1 answer
  • Why are acetyl chloride or acetic anhydride used instead of acetic acid in preparing esters of acetid acid?
    11·1 answer
  • Check all the true statements concerning two identical containers, one with helium gas in it and one with xenon gas. Choose one
    13·1 answer
  • How many grains are in spaghetti
    15·1 answer
  • Assuming that there is a constant partial pressure for oxygen, according to Le Châtelier’s Principle which of the following occu
    10·1 answer
  • Plz help ASAP <br> Thx sm
    10·2 answers
  • What are the three ways that an object can interact with a static field?
    14·1 answer
  • Answer this correctly please...
    7·1 answer
  • Amobarbital sodium react with ethanolic sodium hyrooxide
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!