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
Ilya [14]
2 years ago
14

Someone help 6th grade science i will give brainliest

Chemistry
2 answers:
Oxana [17]2 years ago
4 0
The correct answer is C.
patriot [66]2 years ago
3 0
I believe the answer is C
You might be interested in
The Great Plains are also referred to as____.
Gnesinka [82]

Answer:

The interior plains

5 0
2 years ago
Read 2 more answers
Define by-products of petroleum?
lara31 [8.8K]
Petroleum products<span> are materials derived from crude oil</span><span> as it is processed.

Hope this helps! </span>
7 0
3 years ago
The vapor pressure of ethanol is 30°C at 98.5 mmHg and the heat of vaporization is 39.3 kJ/mol. Determine the normal boiling poi
Gelneren [198K]

Answer : The normal boiling point of ethanol will be, 348.67K or 75.67^oC

Explanation :

The Clausius- Clapeyron equation is :

\ln (\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}\times (\frac{1}{T_1}-\frac{1}{T_2})

where,

P_1 = vapor pressure of ethanol at 30^oC = 98.5 mmHg

P_2 = vapor pressure of ethanol at normal boiling point = 1 atm = 760 mmHg

T_1 = temperature of ethanol = 30^oC=273+30=303K

T_2 = normal boiling point of ethanol = ?

\Delta H_{vap} = heat of vaporization = 39.3 kJ/mole = 39300 J/mole

R = universal constant = 8.314 J/K.mole

Now put all the given values in the above formula, we get:

\ln (\frac{760mmHg}{98.5mmHg})=\frac{39300J/mole}{8.314J/K.mole}\times (\frac{1}{303K}-\frac{1}{T_2})

T_2=348.67K=348.67-273=75.67^oC

Hence, the normal boiling point of ethanol will be, 348.67K or 75.67^oC

3 0
3 years ago
Acids reacts with base and produces salt and water represent it in the form of chemical equation
tatiyna

Answer:

HCl+ NaoH- Nacl+H2O

Explanation:

base react with acid

3 0
3 years ago
Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. supp
Nadusha1986 [10]

Answer: 20 mg Te-99 remains after 12 hours.

Explanation:  N(t) = N(0)*(1/2)^(t/t1/2)

                        N(t) = (80 mg)*(0.5)^(12/6)

N(t) = 20 mg remains after 12 hours

3 0
2 years ago
Other questions:
  • A scientist is studying a chemical reaction. She predicts that after the reaction the product will have less chemical potential
    5·1 answer
  • When you add the metal the volume increases from 25.0 to 28.9 how would you find the volume of the metal?
    10·1 answer
  • What is the kinetic molecular model?
    8·2 answers
  • __________________ is the transfer of heat energy through the movement of particles in a gas or liquid. The warmer parts move up
    14·1 answer
  • Which term describes the materials magma is made of?
    9·2 answers
  • A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats the experiment five times a
    10·1 answer
  • Number of moles of sodium azide<br>​
    12·2 answers
  • The earth's crust is part of which sphere?​
    7·1 answer
  • Discussion the sn1 and sn2 substitution reactions. Haloalkanese
    15·1 answer
  • Density of 1kg of metallic sphere is 2.5 gcm-3 then the volume occupied by sphere is?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!