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
KATRIN_1 [288]
3 years ago
10

A few pieces of dry ice, CO2(s), at -78°C are placed in a flask that contains air at 21°C. The flask is sealed by placing an uni

nflated balloon over the mouth of the flask. As the balloon inflates, the dry ice disappears and no liquid is observed in the flask.
State the direction of heat flow that occurs between the dry ice and the air in the flask.
Chemistry
1 answer:
astra-53 [7]3 years ago
8 0
The dry ice absorbs heat from the air in the flask and become CO2 gas directly. So the heat flow from air to dry ice. And the CO2 gas increase the amount of the air. Though the temperature decreases, the balloon still inflates.
You might be interested in
Can Someone Please Help Me !!!
8090 [49]

alumunum and oxygon with 2 Al atoms and 3 oxygen atoms make alumunum trioxide hope i went full god mode right there

5 0
4 years ago
How are the hydrogen atom and lithium atom similar?
Juli2301 [7.4K]
They both have 1 electron in their valence shell.....
5 0
3 years ago
Identify the name of the compound Cr2(CO3)3.
kompoz [17]
Cr2(CO3)3 is Chromium (III) Carbonate or Chromic Carbonate. 

It is composed of Chromium, Carbon, and Oxygen. Chromium has 2 atoms, Carbon has 3 atoms, and Oxygen has 9 atoms. 

This compound is composed of 36.6% Chromium, 12.7% Carbon, and 50.7% Oxygen.
7 0
4 years ago
Read 2 more answers
HgS + O2 → HgO + SO2
Igoryamba

Answer:

2HgS + 3O2 → 2HgO + 2SO2

The coefficients are: 2, 3, 2, 2

Explanation:

HgS + O2 → HgO + SO2

The equation can be balance as follow:

Put 3 in front of O2 as shown below:

HgS + 3O2 → HgO + SO2

Now we can see that there are 6 atoms of O on the left side of the equation and a total of 3 atoms on the right side. It can be balance by putting 2 in front of HgO and SO2 as shown below:

HgS + 3O2 → 2HgO + 2SO2

Now we have 2 atoms of both Hg and S on the right side and 1atom each on the left. It can be balance by putting 2 in front of HgS as shown below:

2HgS + 3O2 → 2HgO + 2SO2

Now the equation is balanced.

The coefficients are: 2, 3, 2, 2

The law of conservation of mass(matter) states that matter(mass) can neither be created nor destroyed during a chemical reaction but changes from one form to another. An unbalanced equation suggests that matter has been created or destroyed. While a balanced equation proofs that matter can never be created but changes to different form. This is the more reason we have count the atoms of an element on both side of the equation to see if they are balanced irrespective of the new form they assume in the product

5 0
3 years ago
Please help! I'm not a smart 7th grader, on this assignment you write if it's convection, radiation, or conduction, then you wri
sattari [20]
#8 would be radiation
Because of the heat it produces for the air in the home
#9 Conduction
Because it’s preventing physical heat transfer
#10 convection
Because it is stopping the air from rising
#11 Radiation
Because the heat is emitting from the stove and warms him, but not by direct contact
#12 Conduction
Because the heat transfers from the top of the stove to the cats fur.
#13 Conduction
Because the stove under it heats it through contact
#14 I think Radiation
Because the heat warms up the dish through the air in the oven
#15 Radiation
Because the heat is emitting from the fire.
#16 Conduction
Because the blanket is warming you through physical contact.

I’m not completely sure but the is the best I got. Good luck!
6 0
4 years ago
Other questions:
  • Consider the following reaction in a closed system: H¿(g) + I¿(g) d 2HI(g) Which of the following will decrease the rate of the
    7·1 answer
  • Ann believes that carbohydrates store more energy than lipids. Nicco believes that lipids store twice as much energy as carbohyd
    8·2 answers
  • How did mendeleev orginally organize the element in his periodic table
    5·2 answers
  • ASAP ASAP ASAP ASAP
    12·1 answer
  • Does mint really cool your breath? doing a science fair and also is there three good questions i could use for the topic?
    9·2 answers
  • In the chemical reaction below, calcium (ca) and water (h2o) react to form calcium hydroxide (ca(oh)2) and hydrogen gas (h2).ca
    7·1 answer
  • Why aluminium foils are use to wrap food items
    12·2 answers
  • PLEASE ANSWER
    11·1 answer
  • Can you tell me name of Chemicals in food?​
    14·1 answer
  • 1. Name the three particles of the atom and their respective charges are:
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!