CHEMISTRY HIGH SCHOOL

Of the three main states of matter, only gases can be compressed significantly. TRUE

FALSE

Answers

Answer 1
Answer: False! The three states of matter are solid, liquid, and gas. We can not touch gas, so it can not be compressed.

Related Questions

HIGH SCHOOL

How is average bond strength related to relative potential energies of the reactants and the products?

Answers

The greater the average bond strength of the reactants, the greater the potential energy of the reactants.
HIGH SCHOOL

299792458 m/s in scientific notation

Answers

2.998e^8 is how I would write it. If you want it with the least amount of decimals, use 3e^8
299792458 in scientific notation is 2.99*10 8squared m/s

HIGH SCHOOL

Complete the dissociation reaction and the corresponding Ka equilibrium expression for each of the following acids in water. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (A) HC2H3O2
HC2H3O2(aq) (twosidedarrow) [ ]H+(aq) + [ ] [ ](aq)
Ka = [ ][ ] / [ ]
(B) Co(H2O)63+
Co(H2O)63+(aq) (twosidedarrow) [ ]H+(aq) +[ ][ ](aq)
Ka = [ ][ ] / [ ]
(C) CH3NH3+
CH3NH3+(aq) (twosidedarrow) [ ]H+(aq) +[ ][ ](aq)
Ka = [ ][ ] / [ ]

Answers

Answer :

(A) The dissociation reaction of will be:

The equilibrium expression :

(B) The dissociation reaction of will be:

The equilibrium expression :

(C) The dissociation reaction of will be:

The equilibrium expression :

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

(A) The dissociation reaction of will be:

The equilibrium expression of will be:

(B) The dissociation reaction of will be:

The equilibrium expression of will be:

(C) The dissociation reaction of will be:

The equilibrium expression of will be:

HIGH SCHOOL

20 POINTS! The CDC (Centers for Disease Control) is a federal agency that monitors the spreading of various diseases and health issues. They have done extensive research on the effects of tobacco on a person's health.

The CDC does a study on smoking with the hypothesis, "If a person smokes more cigarrettes, then they are more likely to develop heart disease". Which of the following should be a controlled variable for this experiment? Choose all that apply.


1. Amount of smoking a person does
2. weight class of the person
3. state where the person lives
4. Whether or not the person develops heart disease

Answers

The correct options would be

OPTIONS 1 & 2

The state which a person lives in has nothing to do with the experiment, although it would most likely make it easier to observe. Wheter they develop heart disease or not is the results of the experiment.
HIGH SCHOOL

A solution of H 2 SO 4 ( aq ) with a molal concentration of 1.94 m has a density of 1.119 g / mL . What is the molar concentration of this solution?

Answers

Answer:

For water should be the same. 1.94 M

Explanation:

Molarity and molality can be the same in some cases. For instance 1 liter of water weighs 1 kg. What is molality? Molality can be defined as the number of moles of substance (known as the solute) that is found in a certain mass of solvent given in kg, that it is dissolved in. The formula for calculating molality is : m = mole solute / kg solvent

However 1.94 m does not make sense with 1.119 density

1.119g/ml= 1119g/1000

1119 g=1000g water + 119g sulfuric acid=

119g/92g/mol=1.29 mol

Therefore= 1.29 molar does not make sense

HIGH SCHOOL

What does a high boiling point temperature mean about a substance

Answers

I dont know if this is the answer you are looking for, but substances with higher boiling points have larger specific heat capacities.

For example water has a specific heat capacity of 4.186 J/g, while gold has a specific heat capacity of 0.129 J/g

The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. ... A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure.


MIDDLE SCHOOL

Which elements make up the compound Cs2C3?

Answers

Caesium
and
carbon
...hope it helps
HIGH SCHOOL

How much pv work is done in kilojoules for the reaction of 0.68 mol of h2 with 0.34 mol of o2 at atmospheric pressure if the volume change is -4.1 l ?

Answers

The delta H of -484 kJ is the heat given off when 2 moles of H2 react with 1 mole of O2 to make 2 moles of H2O. You don't have anywhere near that much reactants, only 1/4 as much

actual delta H = 0.34  moles H2 x (-484 kJ / 2 moles H2) = 823 kJ 

delta E = delta H - PdeltaV = 823 kJ - 0.41 kJ = 822 kJ
MIDDLE SCHOOL

How do plants dissolve rock

Answers

Hey there 

Plants can dissolve rocks when its roots grow. The roots break the rock into tiny pieces. 

Plants can weather rocks by having its roots grow , often squeeze the rock into so little pieces .


I hope that's help . Good night !

Random Questions
1. Of the six species of seals found in Antarctica, four of them breed on the actual ice in the spring months. Which species of seal or ice expert? A. Crab eater, leopard, harbor, elephant B. Crab eater, leopard, fur, elephant C. Crab eater, wedded, Ross, leopard D. Ross, wedded, leopard, fur 2. Ice that forms and then melts seasonally around the coast of Antarctica is best described as A. Oceanic ice B. Glacial ice C. Sea ice D. Continental ice 3. All of the factors below play a role in creating ocean currents. Which factor has the greatest influence on weather patterns? A. Earth’s rotation B. Heat capacity C. Salinity D. Bottom topography 4. Cold water upwelling help increase the number of organisms in an area by bringing A. Warm water to the area B. More predators C. More nutrients from the bottom D. Warm water nutrients from the top 5. What is the difference between El Niño and La Niña? 6. Which of the following statements about sea surface temperature is evidence of La Niña year? A. It is greater than normal in the Eastern Pacific B. It is lower than normal is the Western Pacific C. It is greater than normal in the Western Pacific D. It is lower than normal in the Eastern Pacific E. Normal Pattern 7. Why is it beneficial to use names for hurricanes over latitude-longitude identification methods? 8. Which of the following organisms does NOT rely on krill as a major food source? A. Adélie penguins B. Leopard seal C. Humpback whale D. Squid 9. Adélie penguins feed mostly on krill but switch to fish during the breeding season and then to squid during the winter. What is a good explanation for this? A. Fish and squid are more abundant, and krill is more scarce B. Fish and squid provide more energy than krill C. Fish and squid is more abundant, and krill is more available D. Fish and squid is preferred but is not as available during the other months 10. All of the following are ways the penguins stay warm EXCEPT A. Swimming fast B. Fat reserves C. Layers of feathers D. Staying close together in groups 11. The population of penguins has increased greatly over the past several decades. Part of this can be attributed to the over-hunting of baleen whales. Develop a logical argument for why these two occurrences can be connected.