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
Neko [114]
2 years ago
13

A substance with a mass of 50.0 g has a temperature change of 40.0

Chemistry
2 answers:
grigory [225]2 years ago
7 0

Answer:

Mass=50.0g

H=670J

change in temperature=40

using. c=h÷m×change in temperature

c=670÷50×40

C=670÷2000

C=0.335jkg-1k-1

Alex2 years ago
6 0

Answer: The specific heat of a substance with a mass of 50. 0g and a temperature change of 40. 0 degrees whne it absorbs 670 J of heat is 337 J/kg. K

Explanation:

Specific heat of a substance is said to be the energy required for an increase in temperature by 1°C in the unit of J/Kg. K

Formula of Specific heat:

Q = mcΔθ

Q represents the quantity of heat

m represents the mass of the substance in Kilograms = 50. 0g÷ 1000 = 0.05kg

c represents the specific heat capacity of the substance = ?

θ represents the temperature change = 40° C

Specific heat, c = Q ÷ mΔθ

                           = 670 ÷ 0.05 × 40

                           = 670 ÷ 2

                           = 335 J/ Kg. K

Therefore, the specific heat of the substance is 335 J/kg. K

You might be interested in
How much heat is needed to boil 3,000 mL of water at its boiling point, 100 C?
Karo-lina-s [1.5K]

Answer: 100C of heat is needed.

Explanation: That is the heating point of water

3 0
3 years ago
I need you help in this homework
Mrrafil [7]

Answer:

OPTION B ,COMPOUND CONTAINING AMMONIUM

4 0
3 years ago
Nitrogen dioxide is produced by combustion in an automobile engine. For the following reaction, 0.377 moles of nitrogen monoxide
Contact [7]

Answer:

The amount of NO₂ that can be produced 8.533 g

Explanation:

       According to question

                                2 NO(g) + O₂(g) → 2 NO₂(g)

Given

Moles of nitrogen monoxide = 0.377

Moles of oxygen = 0.278

'For NO'=\frac{Mole}{Stoichiometry}=\frac{0.377}{2} =0.1855\\'For O_{2} '=\frac{0.278}{1}= 0.278\\

Since 'NO' is the limiting reagent according to this ratio.

According to equation

         2 moles NO reacts to form 2 moles NO₂

So,  0.1855 moles NO give  = 0.1855 moles of NO₂

            Mass of 1 mole NO₂ = 46 g/mole

            Mass of 0.1855 moles = 46 x 0.1855 = 8.533 g

5 0
3 years ago
Use the IUPAC nomenclature rules to give the name for Mg(ClO4)2
Makovka662 [10]

Answer:

The answer to your question is Magnesium Perchlorate

Explanation:

IUPAC Rules to name ternary salts of chlorine

1.- Ternary salts use prefixes and suffixes it depends on the number of oxygens they have.

Example

Metal + Chlorine + 1 oxygen =  Name of the metal + hipo chlor + ite

Metal + Chlorine + 2 oxygens = Name of the metal + chlor + ite

Metal + Chlorine + 3 oxygens = Name of the metal + chlor + ate

Metal + Chlorine + 4 oxygens = Name of the metal + per + chlor + ate

For this compound the name is  Magnesium Perchlorate.

6 0
2 years ago
What are the sign and magnitude of the charge of atom containing 14 protons, 15 neutrons, and 12 electrons?
Karo-lina-s [1.5K]
<span>We know that protons gives positive charge, neutrons no charge and electrons negative, then +14 - 12 = +2 So the charge of the atom is sign positive and magnitude 2</span>
7 0
3 years ago
Other questions:
  • How are living things put together?
    8·1 answer
  • Which organism can reach 50 meters in size
    13·1 answer
  • An aqueous solution of iron(II) sulfate (FeSO4) is prepared by dissolving 2.00 g in sufficient deionized water to form a 200.00
    12·1 answer
  • Phosphoric acid (h3po4) has three acid dissociation constants ( ka). the first dissociation constant has the greatest value, and
    13·2 answers
  • A glass breaks is a physical or chemical change
    10·2 answers
  • What is this?<br> "This car is speeding up"
    11·2 answers
  • Is this equation balanced: AgNO3 + 2 KCl --&gt;AgCl + KNO3 Yes No
    8·1 answer
  • What is the energy of the reaction of aqueous decomposing carbonic acid?
    11·1 answer
  • All the following process produces hematite except
    12·1 answer
  • Using the periodic table, complete the table to describe each atom.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!