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Svetlanka [38]
4 years ago
7

Which statement is true regarding the sublimation of dry ice (solid co2?

Chemistry
1 answer:
WINSTONCH [101]4 years ago
5 0
Sublimation is the process of phase conversion of a compound or any entity from a solid state to gas state. The process is the opposite of deposition which converts a gas into its solid counterpart. Sublimation entails greater entropy as gas components are more entropic than solids are.
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In the chemical formula 3H2O, the number "3" is a Question 27 options: subscript place holder coefficient
Maru [420]
<h3><u>Answer;</u></h3>

Coefficient

<h3><u>Explanation;</u></h3>
  • Coefficients are the numbers in front of the chemical formulas.
  • For example in 3H2O ,the three infront of the water molecule is called the coefficient.
  • These numbers give two very important pieces of information about a chemical equation. The coefficients give the number of molecules (or atoms) involved in the reaction.
  • Additionally, coefficient give the number of moles of each substance involved in the reaction.
6 0
3 years ago
Which type of cell is larger?<br><br> Prokaryotic<br><br><br> Eukaryotic
nordsb [41]

Answer:

Eukaryotic

Explanation:

larger eukaryotic cells have evolved different structural adaptations to enhance cellular transport

5 0
3 years ago
Read 2 more answers
Help please !!
Alekssandra [29.7K]

Answer:

its 3

Explanation:

7 0
4 years ago
Read 2 more answers
A canister of acetylene has a volume of 42 L. The temperature of the acetylene is 305 K and the pressure is 780 torr. Determine
stellarik [79]
First, we need to assume acetylene to adapt an ideal gas behavior. So, we can use the Ideal Gas Law:

PV = nRT

Given:

V = 42 L
T = 305 K
P = 780 torr = 1.026 atm 
R = gas constant, 0.0821 L atm/ mol K
n = amount of gas in the canister

1.026 atm * 42 L = n * 0.0821 L atm/mol K * 305 K

n = 1.72 moles of gas 


3 0
4 years ago
suppose you mix 100.0 g of water at 22.6 oc with 75.0 g of water at 75.4 oc. what will be the final temperature of the mixed wat
Arada [10]

The temperature of mixed water is 45.230C under the conditions stated.

<h3>How can the change in temperature when mixing water be calculated?</h3>

T(final) = (m1 T1 + m2 T2) / (m1 + m2), at which m1 and m2 are indeed the weight training of the water in the initial and 2nd canisters, T1 is the water temperature in the first container, and T2 is the water temperature in the second container, can be used to determine the final the water's temperature mixture.

<h3>Briefing:</h3>

The given parameters;

mass of the cold water, m = 100 g

initial temperature of the water, t₁ = 22.6 ⁰C

initial temperature of the hot water, t₂ = 75.4⁰ C

75 g is the hot water's mass.

specific heat capacity of water is 4.184 J/g⁰C

The mixture's final temperature is estimated as follows;

Based on the principle of conservation of energy;

Heat received by the ice water equals heat lost by the hot water.

mcΔθ₂ = mcΔθ₁

75 x 4.184 x (75.4 - T) = 100 x 4.184 x (T - 22.6)

75 x (75.4 - T) = 100 x (T - 22.6)

(75.4 - T) = 1.333(T - 22.6)

75.4 - T = 1.333T - 30.1258

75.4 + 30.1258 = 1.333T + T

105.5258 = 2.333T

T = 45.2318⁰C

To know more about temperature visit :

brainly.com/question/29386637

#SPJ4

5 0
2 years ago
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