if you are making a set of standards from a 10.0mg/L standard, show the calculation and explain how you acutally make up 2mL of 4.00mg/mL standard.

Q: 2.58 L solution containing 1.58 mol L-1 hydrochloric acid (HCl) has been left on your bench. How…

A:

Q: While assembling the equipment and raegents for this investigation, suppose you spilled 500 mL of 1M…

A: IF you spill 500mL of 1 M HCl. on your jeans you should do the following things.

Q: A 25mL sample of 2.0mol/L sodium oxalate is reacted with 30mL of 1.50 mol/L copper (II) nitrate…

A: Given that 25 mL sample of 2.0 mol/L sodium oxalate is reacted with 30 mL of 1.50 mol/L copper (II)…

Q: List the common steps taken in treating water for a public water system?

A: The common steps taken in treating water for a public water system have to be listed below.

Q: FeClz is highly corrosive and is irritating to skin and eyes. Which waste container should sol…

A: FeCl3 is a highly corrosive. FeCl3 is very acidic and we used basic container to put in.

Q: PHOTOSYNTHESIS 4 LOCATED IN THE 7 2 TRAPS LIGHT ENERGY AND MAKES FOOD 3.

A: Photosynthesis: It can be defined as the conversion of light energy into chemical energy by the…

Q: Which one of the following is not an organic pollutant: 1. a. Chloroform b. Benzene c. Cobalt…

A: On the basis of types of compounds these are divided into two pats as ; Organic compounds :-  The…

Q: ball & stick v + labels Highlight H11 and H13 b) H1l and H13:

A: A question based on stereochemistry, which is to be accomplished.

Q: A primitive air-conditioning unit for use in places whereelectrical power is not avai lable can be…

A: Vaporization is the conversion of liquid to vapor form. On the vaporization of one mole of water,…

Q: 1.The quantity of heat evolved or absorbed is directly proportional to the mass of the solute that…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Benzalkonium chloride solution Make a solution such that 10 mL diluted to a liter equals a 1:5000…

A: % w/v means that the certain mass of the substance in present in 100 units of volume.

Q: What is the preferable period of time to soak the apparatus with acid? Some said it is preferably…

A:

Q: 5- You need to pipette a 50μl from a 500ml stock bottle what should you do? Use small volume from…

A: Our target is to remove a 50 μL solution from a 500 mL stock bottle.

Q: n a particular hospital, a doctor ask you to prepare 1.50 L of 2.75 M ethyl alcohol (C2H5OH)…

A: No.of moles =  Molarity  × Volume   Mass =  No.of moles × Molar mass

Q: Why does bee sting cause pain and irritation? Rubbing of baking soda on the sting area gives relief.…

A:

Q: PHOTOSYNTHESIS 4 LOCATED IN THE 7 2. TRAPS LIGHT ENERGY AND MAKES FOOD り

A: The process by which green plants prepare food in the presence of sunlight, carbon dioxide,…

Q: Animal fats and vegetable oils become rancid when exposed to air because

A: Animal fats and vegetable oils becomes rancid when exposed to air because Hydrolysis of animal fats…

Q: Which of the following statements about the BOD test is FALSE? A BOD test is a simple and practical…

A:

Q: In a few lines, describe the IMMENENT IMPORTANCE of “Green Chemistry" and its importance to Society.

A: Green chemistry: The branch of chemistry which deals with the reduction of the harmful effect of…

Q: If you were in a town struck by severe calamity and drinking water is not yet available, how will…

A: Flood water is not suitable for drinking as such.

Q: List the micro nutrients.

A: Micronutrients are nutrients which plants require in much smaller amounts.

Q: Concentration of oxygen dissolved in water* biochemical oxygen demand (BOD) total suspended solids…

A: The amount of oxygen that is dissolved in water is known as dissolved oxygen (DO).  The amount of…

Q: Using the following equation: 2NaOH + H,SO, > 2H,0 + Na,SO, How many grams of sodium sulfate will be…

A:

Q: Explain: 1.Depredation caused by industrial and transportation toxins and plastic in the ground;the…

A: To explain: The depredation caused by industrial and transportation toxins and plastic in the…

Q: What is meant by supercritical fluids? Explain how supercritical fluids can be used for the…

A: A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point,…

Q: True False Granules may be swallowed, dispersed in food, or dissolved in water. Granules are usually…

A:

Q: A bubble of air escaping from a diver's mask rises from a depth of 155 ft to the surface where the…

A: Given the depth of water from the surface, h = 155 ft * 30.48 cm1 ft*1 m100 cm= 47.244 m The volume…

Q: A 3-year-old boy was left alone at home. The boy’s parents went out for a quick errand but, the…

A: 1. Possible Hazard are as follows:- Fire in home , loss of energy due to loss of gas which is not…

Q: A parent witnessed his child who just ingested an old silvery coin. This is an emergency because…

A: Silver is non-toxic and one of the precious metals with the symbol Ag and it is used to make…

Q: In a few lines, describe the IMMENENT IMPORTANCE of "Green Chemistry" and its importance to society…

A: Green chemistry: The branch of chemistry which deals with the reduction of the harmful effect of…

Q: Name 10 dissolved substances that negatively affect the environment

A: Dissolved salts may be present in high enough concentrations to be toxic. Eg: naturally occurring…

Q: What type of activities will you prepare to explain for students to explain the different types of…

A: Solution Every style of pollution has 2 sources of occurrence; the purpose and therefore the…

Q: Copper and lead is a potential contaminant of tap water Give 5 mitigation measures to reduce the…

A: A question based on environmental pollution that is to be accomplished.

Q: 5µL of the 500mM Tris is then added to a tube labelled A containing 995µL of sterile water. 15µL of…

A: The Student prepared the sloution of 100 mL whose concentration is 555 mM. Then 5µL tris solution is…

Q: An action will elevate the concentrations of three chemicals in the drinking water supply: 1,1,1-…

A: The concentration of these chemicals in drinking water is much higher than said to be safe for…

Q: Please provide some examples of how biotic or abiotic factors affect contaminant support, like point…

A: The release of hazardous chemicals into the atmosphere is referred to as pollution. Pollutants are…

Q: 5. Determine the number of equivalents: a. 20 g of NaCi b. 15 g Of NaOH c. 35 g of Ba ( )2 d. 0.5 g…

A: Formula for Number of equivalents =  Given MassEquivalent massEquivalent mass =Molar massn- factor…

Q: Grams of plant tissue analyzed and found to contain 92.6 micrograms of zinc. The concentration of…

A: Here we have to find grams of plant tissue (sample) for different PPM given in the question for…

Q: What is the most nearly the combined volume of 1.0g of hydrogen gas and 7.0g of helium gas when…

A: Mass of hydrogen gas = 1.0 g Mass of helium gas = 7.0 g Temperature T = 35 °C = 35 + 273.15 K =…

Q: What is the method of analysis for the chemical pollutants of soil pollution?

A: The most common soil pollutants are heavy metals such as Lead (Pb), Mercury(Hg), Arsenic(As) ,…

Q: 275g. The soil

A: Mass of saturated pores= 275gm After drying  24 hours ,sample weight = 200gm

Q: Which among of the following is a source of water pollution? a. Pathogens b. Organic material c.…

A: Pathogens: Pathogens transmitted through contaminated water causes various diseases like typhoid,…

Q: 8.If the label tells you to apply 3 ounces of Pesto 60 SP per 1,000 sq. ft. then how much would be…

A: Given that, Pesto 60 SP required per 1000 sq. ft = 3 ounces  To find: 1). Quantity of Pesto 60 SP…

Q: A bubble of air escaping from a diver's mask rises from a depth of 152 ft to the surface where the…

A: Given the depth of water, h = 152 ft * 0.3048 m1 ft = 46.33 m density of sea water, d = 1.025 g/mL…

Q: A community member living in a highly populated city has asthma, which increases sensitivity to…

A: The table below shows the U.S. Air Quality Index (AQI).The higher the AQI value, the greater the…

Q: To make 5.00 L of a fruit punch that contains 10.0% v/v ethanol, how much 95.0% v/v ethanol must be…

A: The percentage volume by volume is used to measure the concentration of a solute in a solution which…

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.