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Q: QUESTION 11 The following are used as primary standards for NaOH EXCEPT O sulfamic acid sodium…

A:

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: What happens between liquid water and water vapor when you have an increase in energy in the system?…

A: we have choose correct option

Q: Explain why the curve has two segments in which heat is added to the water but the temperature does…

A:

Q: True or false: Particles with small surface area to volume ratios hold more water than particles…

A: The water holding capacity of particles is important to determine in the field of agriculture as…

Q: Use a Venn diagram to compare mechanical mixtures and solutions.

A: Venn diagram to compare mechanical mixtures and solutions is shown in the step below.

Q: 1. If an object has a high specific heat, would it be more like a conductor or an insulator?…

A:

Q: After water and benzene are mixed, we see two layers. A True False

A: After water and benzene are mixed, we see two layers.   This is a True statement.

Q: H2O H, Heat

A:

Q: Crystallization is used to? a) Separate soluble solid from a liquid b) Separate insoluble solid…

A: It is the process to separate the solid components from the liquid solvents.

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

A:

Q: Give the physical properties of a water from a faucet

A: Physical properties are the properties which are used to represent the state of the system. These…

Q: Questions 2,3 and 4

A: For 2.)  Density = mass/volume Mass = ????  Volume = 55.5 ml Density = 1.84 g/ml Mass = 1.84 * 55.5…

Q: What will happen when cold water with higher density mixes with warm water?

A: When a molecule is cooled, then the particles will move slowly since it's kinetic energy is low. As…

Q: A 20% sugar solution is composed of 500 grams of sugar. Determine the amount of water present in the…

A: Endothermic process are those where heat is absorbed and exothermic process are those were heat is…

Q: What is the importance of these rules?

A: To describe the importance of Aufbau principle, hund's rule and pauli's exclusion principle.

Q: Which of the following are equal to the specific heat of water? Select all that apply. 4.184 J/g°C…

A: The heat energy absorbed or evolved during the reaction is calculated by using specific heat…

Q: When we heat the cheetos was all the heat released actually captured by the water?

A: In cheetos experiment, a chip is burnt and heat released by it is used to raise the temperature of…

Q: what is the temperature when 20 grams of salt is added to boiling water

A: Boiling temperature is slightly raised by salt, but not significantly. Twenty grammes of salt will…

Q: Which is colder, dry ice (solid Co2) subliming -78.5°F or ethyl alcohol freezing at 179°F?

A: Dry ice is solidified CO2 which is used primarily as a cooling agent having very low temperature.…

Q: NaOH Ph EtOH, heat

A: The reactant is an aldehyde. It reacts with a base sodium hydroxide  and subsequently with the…

Q: What should you do if you begin to heat a liquid and see that you have forgotten to add a boiling…

A: Boiling chip or stone are used to prevent super heating of liquid during the distillation.

Q: When making ice cream and for the ice to melt, the salt/ice mixture must draw energy from the system…

A: Melting is a process that requires energy to weaken the intermolecular forces present in the solid…

Q: 33.How much energy is required to heat 25 mL of water with density 1g/mL, which is at 10°C to 90°C.…

A: specific heat capacity is the amount of energy required to raise the temperature of 1 kg of material…

Q: What type of a system and process does water heater that takes in cold water a

A: Heat transfer process takes place in a heater, where the energy is derived from the an external…

Q: Explain how the density of water varies from 0⁰C to 10⁰C and explain how this temperature density…

A: Water exhibits an abnormal property whereby it expands instead of contracting when the temperature…

Q: 38. A potassium chloride (KCI) solution containing 30g/100g of water at 10°C is warmed to 40°C. What…

A: To find out the mass of potassium chloride which is needed to be added to a solution consisting of…

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: which best explains metals having low specific heat ?

A: Specific  heat of a metal is defined as the heat capacity per unit mass.

Q: is sweet glutinous rice flour pure subtance or mixture

A: Given question is  :  is sweet glutinous rice flour pure substance or mixture = ?

Q: What can we use hard water for?

A: USES OF HARD WATER Uses of hard water is given as following : 1. Hard water contains extra minerals…

Q: How can we remove hardness from water? write any one method

A: The hardness of water are  two types: 1.Temporary Hardness :The presence of magnesium and calcium ,…

Q: W Which of the following is most directly responsible for water having a high heat capacity? O lonic…

A: The high heat capacity of water is primarily due to hydrogen bonding. Hydrogen bonding is a type of…

Q: What is happening to the water molecules at segment F? C A D E G Time Freezing, the water molecules…

A: from C point to G point there is a conversion of vapours to solid.  Let us study each point, one by…

Q: Olive oil lowers “bad” (lower density lipids). Olive oil melts at -6.60 0C and boils at 300.00 0C.…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: HO H', Heat

A:

Q: - Key Question: What is desalination, and why is it important? with water (Figure 1). You

A: Desalination is the removal of salt from seawater. This produces clean drinking water and is…

Q: How much heat, in kJ, is absorbed by 50.0g of water if the temperature changes from 298K to 357K?…

A: Given, The amount of heat absorbed by 50.0g of water to increase temperature from 298 K to 357 K is:

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: Assume that 1 gram of liquid water is at a temperature of 20°C. How many calories (or joules) of…

A: The amount of heat required to increase the temperature of one kilogram of a substance by one degree…

Q: What happens when soda bottles is open?

A: Carbonated drinks are defined as drinks that contain dissolved carbon dioxide in it. It's a soft…

Q: 3. Ba(OH)26) + heat -

A:

Q: what happens when you put a mixture of rubbing alcohol and water on baking soda?

A: Generally, sodium hydrogen carbonate or sodium bicarbonate is crystalline white powder which is act…

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.