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
likoan [24]
2 years ago
15

At the melting point of a substance, temperature ______ as heat is being added and the substance is changing from a solid to a l

iquid.
A. increases

B. remains constant

C. decreases

D. ceases to exist
Chemistry
2 answers:
madam [21]2 years ago
4 0
The temperature Increases
timofeeve [1]2 years ago
4 0
At the melting point of a substance, temperature INCREASES as heat is being added and the substance is changing from a solid to a liquid
You might be interested in
True or false, The four units that must always be used when using the ideal gas are 44.0 liters
Bogdan [553]

Answer:

for volume only liters can be used

Explanation:

4 0
2 years ago
A closed container holds 2.0 moles of CO2 gas at STP. How many moles of oxygen can be placed in a container of the same size at
PilotLPTM [1.2K]

Answer: 2 moles

Explanation:

STP is Standard Temperature and Pressure. That means the pressure is 1.00 atm and the temperature is 273K. Since the oxygen is placed in the same container, we can use Ideal Gas Law to figure out what container the CO₂ used.

Ideal Gas Law: PV=nRT

P=1.00 atm

n=moles

R=0.08206 Latm/Kmol

T=273K

CO₂

V=\frac{nRT}{P}

V=\frac{(2.0 mol)(0.08206Latm/Kmol)(273K)}{1.00atm}

V=44.8L

Since we know that CO₂ has a 44.8 L container, we can use that to find the moles of oxygen.

n=\frac{PV}{RT}

n=\frac{(1.00atm)(44.8L)}{(0.08206Latm/Kmol)(273K)}

n=1.99=2mol

There are 2 mol of oxygen.

5 0
3 years ago
250 kilograms is how many pounds?
Kruka [31]

Answer:

250 Kg = 551.155655 lb

Explanation:

6 0
2 years ago
Read 2 more answers
The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?
Tomtit [17]
When the enthalpy value is given, we can calculate how much heat is use or produces in a given equation. 

67.6 kCal ---> 67.6 kCal= 1 mol of reaction
1 mol of reaction=  1 mol of CO (based on the coefficient)

so 1 mole of CO gives us 67.6 kCal of heat.

calculation:

1 mol CO\frac{67.5 kcal}{1 mol CO} = 67.5 kcal




5 0
2 years ago
Which compounds have the empirical formula CH2O?
lara [203]

Answer:

The answer to your question is all the formulas in bold has the same empirical formula

Explanation:

Data

Empirical formula     CH₂O

Process

To solve this problem factor the subscripts of each formula and compare the result with the empirical formula given.

a) C₂H₄O₂      factor 2          2(CH₂O)

b) C₃H₆O₃      factor 3          3(CH₂O)

c) CH₂O₂        this formula can not be simplified

d) C₅H₁₀O₅      factor 5         5(CH₂O)

e) C₆H₁₂O₆      factor 6         6(CH₂O)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Another way to say reactants is Question 4 options:
    12·1 answer
  • Atoms containing the same number of protons and different numbers of neutrons are _____. (1 point)
    6·2 answers
  • What three compounds are produced by the combustion of hydrocarbon fuels?
    14·1 answer
  • Which is a spectator ion in the reaction between NaOH(aq) and H2SO4(aq)?
    15·2 answers
  • The Lucas test has _______ results based on the type of alcohol present because the reaction involves a _________, which is ____
    7·1 answer
  • What is the definition of RNA<br>Messenger RNA<br>and <br>Ribosome?<br><br>​
    9·1 answer
  • What is the main difference between vascular and nonvascular plants? the ability or inability to perform photosynthesis the pres
    14·2 answers
  • How many significant figures are in the measurement 1.3000 meters
    8·1 answer
  • The chemical equation of rusting of iron is given
    10·1 answer
  • 8
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!