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nevsk [136]
3 years ago
10

Mildred takes a pound of frozen hamburger meat out of the freezer and puts it into the refrigerator. Which of the following best

describes the direction of heat flow?.
Chemistry
2 answers:
Zinaida [17]3 years ago
8 0

Answer:

from the air in the refrigerator to the hamburger. :)

Explanation:

Sedaia [141]3 years ago
5 0
The heat will flow into the frozen hamburger. By gaining heat, it will thaw. Remember heat flows from high to low. since the temperature of the refrigerator is lower than the freezer when you put in the burger there, it is colder inside the burger than outside, so heat will go in. 
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What is the molarity of H3PO4?
masya89 [10]
The answer is 14.8 hoped this helped
3 0
3 years ago
How many moles of gas would occupy 22.4 L at 273K in one arm?
andrew-mc [135]

Answer:

1 mol

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the provided information in the question;

V = 22.4L

T = 273K

P = 1 atm

R = 0.0821 Latm/molK

n = ?

Using PV = nRT

n = PV/RT

n = (1 × 22.4) ÷ (0.0821 × 273)

n = 22.4 ÷ 22.4

n = 1mol

4 0
2 years ago
A mixture in which particles are not evenly distributed and particles keep their unique properties.
lina2011 [118]
<h2>Answer : Option D) Heterogeneous mixture</h2><h3>Explanation : </h3>

A mixture in which particles are not evenly distributed and particles keep their unique properties are called as heterogeneous mixture.

Usually, in heterogeneous mixture the substances are not evenly distributed and they can be easily separated through any physical methods.  Also the components retains their original/unique properties in the mixture. It usually contains various particles from different substances that are not uniformly distributed throughout the mixture.

4 0
3 years ago
Read 2 more answers
4 Compare What is the difference between<br> temperature, thermal energy, and heat?
Ivahew [28]

Answer:

The term temperature refers to the average amount of heat or the motion energy of particles in a substance. It measures the hotness and coldness of a substance. If an object has particles that move very fast, then it has a high temperature.

Temperature is different from the term thermal energy. Thermal energy is the total motion energy of particles in a substance. The movement of particles is always dependent on their number. If an object contains many particles, then it has greater thermal energy.

On the other hand, Heat is the energy that is involved in the movement of particles between objects that have different temperatures, particularly from an object with a high temperature to an object with a low temperature.

4 0
3 years ago
Read 2 more answers
You do an experiment in which you need 0.5 moles of tyrosine (C9H11NO3). How many grams must you weigh out?
Yuki888 [10]

Answer: a)  90.5g

b) 33.6 L

Explanation:-

Molar mass of tyrosine  (C_9H_{11}NO_3)= 181 g/mol

According to Avogadro's law, 1 mole of every substance weighs equal to its molar mass.

1 mole of tyrosine  (C_9H_{11}NO_3) weighs = 181 g/mol

0.5 moles of tyrosine  (C_9H_{11}NO_3) weigh =\frac{181g/mol}{1}\times 0.5moles=90.5g

b) According to Avogadro's law, 1 mole of an ideal gas occupies 22.4 Liters at Standard conditions of temperature and pressure (STP).

1 mole of gas at STP occupy = 22.4 L

1.5 moles of gas at STP occupy =\frac{22.4L}{1}\times 1.5=33.6L



5 0
3 years ago
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