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Q: A pressure cooker reduces cooking time for food, because ___________ a) Heat is more evenly…

A: Pressure cooker is used to cook food in a efficient manner, that is, it save cooking time, fuel…

Q: Write about the least to most important safety rules in a laboratory room. (Atleast 6 safety rules

A: 1. Dress for laboratory lab  This is the safety rule because your clothing is the best form of…

Q: Will water alone clean oil from a fabric?

A: Solution- No, water Not alone clean oil from a fabric for there is, required to chemical energy as…

Q: What is a suspension, and how does it differ from acolloid?

A: A heterogeneous mixture of a finely distributed solid in a liquid is known as a suspension. In a…

Q: What is the liquid density of Propane as a fuel?

A: Propane is a hydrocarbon used as fuel.

Q: What is supercritical fluid?

A: ANSWERE IS DISCUSSED BELOW :

Q: What is the normal boiling point of pure water? Select all correct answers

A: Boiling point is the temperature at which the vapour pressure of liquid is equal to atmospheric…

Q: Water __________ upon freezing.     sublimes     contracts     expands     increases its…

A: Water particle contract upon freezing  And viscosity also increase  And also specifuc heat decrease

Q: The overall reaction 2Co (aq) + 2C1"(ag) + 2Co2"(aq) + Cl2(g) has the standard cell voltage EcellF…

A:

Q: Which has lower temperature 100 ml of water with 10 grams of sugar or 100 ml of water with 10 grams…

A:

Q: "hich characteristic of water O a O b adhesion surface tension

A: B answer is correct. Surface Tension The high surface tension helps the paper clip - with much…

Q: What happens to a snowflake when it is put in the freezer? does it melt or does it become glass ice?…

A: Solution - According to the question - Given - snowflake icon represents the number 1 or the least…

Q: Define oil viscosity.

A: Viscosity is a physical property of liquid that depends on various factors like intermolecular force…

Q: 3. Question three Hydrogen bonds are force that attracts molecules to each other in most liquids.…

A: 1.Hydrogen bonds are forces that attracts molecules  to each other in the liquid. Water can gorm…

Q: In hand. your own words, explain how you can boil water in a syringe without burning your

A: We know that, the boiling point of water is 100 0 C in 1 atm. At the boiling point, internal vapor…

Q: State Klechkowsky’s rule.

A: Aufbau principle states that the filling of electrons in atomic orbitals of an atom or ion that…

Q: As a liquid sample is heated without a phase change, which physical property will decrease?  a)…

A: We know, volume increases with increasing of temperature due to increase in kinetic energy.  And we…

Q: The force that causes the molecules on the surface of the liquid to form a layer (stretched…

A: The molecules present inside the liquid experiences intermolecular forces in all directions and…

Q: When a vapo condenses into a liquid:

A: Condensation is a physical process where a gas or vapor changes its state to a liquid. This process…

Q: From daily life tell how hardness in water effects

A: Hardness of water is defined as amount of soluble salts per parts of millions in water. Some bad…

Q: Write a full report on a water bath

A: Water bath is used to heat the samples in lab. It is made from a container filled with heated…

Q: What happens when you drop a chunk of diswashing paste on water? What will happen to both substance?

A: Dishwashing paste contains different type of surfactants. When this dishwashing paste added with…

Q: Complete the Venn diagram below. Write down the similarities (at the middle) and differences (side)…

A: Soap :-    i. Soaps work well in soft water.   ii. Soaps cannot perform a cleansing action.   iii.…

Q: a mixture containing only water and salt must be boiled to seperate the salt from water true or…

A: Yes the above statement is TRUE. But the above boiling must be done in a distillation flask.

Q: Properties of Liquids and IMF example andbrief discussion

A: Liquids can be defined as fluids which do not have fixed shape but volume. For example: Water, Oil,…

Q: What type of contaminants, if any,  are found in the mountain water?

A: Type of contaminants in the mountain water.

Q: Phenol is subject to Huckle's law True Error

A:

Q: what is water without tubig?

A: Water is Bottled at the source, completely untouched by human hand. Naturally enriched with…

Q: Is there any example of liquid liquid phase separation of homogeneous mixture in our daily life?

A: Yes, there are many everyday examples of liquid-liquid phase separation of homogeneous mixtures. One…

Q: List 4 things to be considered when determining the type of irrigation system to use. a. b. c. d.

A: Water is inevitable for the healthy growth of plants. So in areas where rain fall is not sufficient…

Q: Question 5 (1 point) The difference between the greater and weaker force is known as the O a…

A: When a force acts on an object, it changes the object's speed and direction.  The bigger the force,…

Q: an electrical current can produce which type of force?

A: Electric current is produced By flow of electrons or charges , When a charge flow magnetic field is…

Q: A _____________ passes through a semipermeable membrane.

A: Semipermeable membrane is the membrane which has very small pores. It is used for osmosis and…

Q: 3 example problems with solution about TEMPERATURE AND HEAT.

A: The formula of temperature and heat is, Where, Q = heat released m = mass of an object c = specific…

Q: heating a mixture to 100 degrees is necessary to seperate a mixture only containing salt and sand…

A: Yes given statement is true  Without heating cannot be separate sand and salt

Q: Rank cork, concrete, copper and glass from most heat conductive to least.

A: HEAT CONDUCTION:- Heat conduction is transfer of heat from higher temperatures to low temperature.…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.