SCI 215 Final Project Rough draft

Fill in blanks below with the missing information:

(A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true but the second is false, and (D) if the first sentence is false but the second is true. 1. Radioactive wastes, like uranium, must be handled and disposed of according to special regulations designed to protect people and the environment. Nuclear power plants produce too much greenhouse gases due to the burning of uranium. 2. In the experiment on determining the dissolved oxygen concentration of a water sample, the compound used to acidify the sample was hydrochloric acid. An acidic solution will have a pH greater than 7. 3. Pure water has a slight blue coloration that goes deeper as the thickness of the sample increases. Water follows the temperature of its surrounding. 4. The solubility of oxygen in water increases at colder temperatures, and decreases at higher temperatures. DO can be measured in milligrams of oxygen (O2) per liter of water.  5. An atom is composed of three subatomic…

How does the 1966 Fahrenheit 451 move portrayed censorship? Provide details and examples

1.Explain the slogan about chemical safety " A spill, A slip, A hospital trip" 2.How do you apply 5s(sort, set in order, shine, standardize, sustain) to attain chemical safety at home and in school?. Enumerate

Complete each of the following equations:(a)37Li + ? ⟶ 224He(b)614C ⟶714N + ?(c)1327Al +24He ⟶ ? +01n(d)96250Cm ⟶ ? +3898Sr + 401n

Based on a grade 11 chemistry student, answer the following question based on the provided tables: Part G:  Final Identification of the Poison By this time, Tylenol has been pulled off the shelves at all of the stores in the area and a nationwide recall has been announced.  Several suspicious capsules have been found and tested.   The contents of the capsules contain a compound with a nitrogen content of greater than 15% and a carbon content of less than 50%.   What is the poison in the capsule?  Provide calculations to support your answer.

Given: Jimmy Jones Age: 8 years old Weight: 88lb Metronidazole suspension 7.5mg/kg/day M.ft. dose = 5 mL Sig: 5mL b.i.d. x 10days Question: If metronidazole is available in 250-mg tablets, how many tablets will be needed to fill the prescription?

Mercury emitted by industrial activities bioaccumulates in saltwater Tima as methylmer cury. The concentration of methylmercury in canned albacore tuna averages 30 x 10 g / 85 g of tuna. Determine the number of times per year when an individual (both male and female) can safely consume 110 g of canned albacore tuna. The reference dose is RD-1x10 mg/(kg-day).

The studies on the toxic effects of chemicals in the environment are important in attempting to measure and assess the toxic effects.  (a)With a suitable examples, identify TWO main effects of toxicity.   ( 4 )  (b)There are several routes of entry of the toxicant into the human body which in the end can cause harmful diseases. From your point of view, why a modern lifestyle can create a pattern of harmful disease due to a toxicant and suggest how to overcome the unwanted interaction from happening.    ( 16 )    ( Total / Jumlah: 20 )

help plz god give u long life  i need before 11:50Pm

Scientists study the impact of changing only one component of a cancer treatment in a laboratory. Which of the following describes the study? controlled experiment observational study conceptual model computational study

1. Give at least 2 significant examples of chemical reactions that falls on change in intrinsic properties and production of light. 2. Enumerate chemical reaction that may bring benefit or harm to life as well as to environment. Give 1 example for beneficial and 1 for harmful 3. Given the statements, write the chemical equation and label the reactant and product a. Aluminum (Al) reacts to oxygen (O2) to form Aluminum oxide (Al2O3). b. The reaction of sulfuric acid (H2SO4) and sodium hydroxide to produce sodium sulfate (Na2SO4) and water

2 What is reservior in environmental chemistry? What are O1D (O singlet D) and O3P( O priplet P)? Not sure if it's written in this way.

We were given an activity about observing 2 balloons. 1 balloon is in the basin with cold water and the other balloon is in the basin with hot water we were task to observe it after 1 minute and after 3 minutes and wrote our observation which is the balloon in the basin with hot water expanded and the balloon in the basin with cold water shrunk. The question is how would we apply our learning on this activity in real life?

The Covid-19 pandemic has many experts commenting on the science associated with the virus - origins, vaccines, monoclonal antibodies, masks, social distancing.  It is important to consider what the experts say, but to also evaluate their statements.  We will start with the scientific method.  I want you to outline the scientific method from what you have been taught in previous classes.  You can list steps, parts, process, short descriptions, whatever.  If not taught in previous classes, then you will make your best guess about it.

For each scenario below, describe: (a) How could they have been prevented. (b) What should be the appropriate response to minimize harm. During a chemistry experiment, Jude carefully pours an unknown solution from a test tube into a beaker. His groupmate, John surprises him from behind. Jude accidentally drops the beaker and glass pieces caught his sandaled foot.

Can you help w/ #7?

LIMIT TEST (IMPURITIES - BIOLOGICAL) Instructions: Note the color change of each of the samples by writing blue or pink accordingly. Then give inference whether the sample is contaminated or not contaminated upon observation. Answer the highlighted numbers.     BLANK  (Sterile distilled water) Reference Sugar Solution Sample A Sample B REPLICATE 1 BLUE BLUE PINK PINK REPLICATE 2 BLUE PINK BLUE PINK REPLICATE 3 BLUE PINK PINK PINK INFERENCE NOT CONTAMINATED CONTAMINATED 1 2   1. 2. 3. Which of the two samples is relatively clean of biological impurities? 4. Given the result in limit test as an analyst, what will be the final conclusion to this? Write whether rejected or accepted for each sample.  (see attached photo)

What is the major ingredient of Tums tablets used in today's experiment ? - Mg(OH)2 - NaHCO3 - KHCO3 - CaCO3 - Ca(OH)3

Calculate the dose for a child 4 years of age, 39 inches in height, and weighing 32 lb. for a drug with an adult dose of 100 mg using the BSA equation?

Which of the following materials would make a better shield from radiation? i)  Iron (density = 7.87 g/cm3) ii)  Titanium (density = 4.50 g/cm3) iii)  Tungsten (density = 19.36 g/cm3)

True or false? (No need explanation) different types of gloves protect against different types of chemicals.   The most likely route of entry for exposure to chemicals is through your nose and mouth.   Never expose yourself to any meterial unless you know exactly what it is, how it can hurt you and what you need to protect yourself

A 23-year-old woman with a history of asthma was brought to the emergency department by ambulance. She was extremely short of breath. Her level of consciousness was diminished greatly, and she was only able to respond to questions with nods or one-word responses. She had a weak cough, with nearly inaudible breath sounds. After drawing blood gases, she was placed on supplemental oxygen. Vital signs: heart rate, 160 bpm; blood pressure, 120/84 mm Hg; temperature, 37°C; and respiratory rate, 36/min. Her initial blood gas and total hemoglobin results were as follows: pH = 7.330 pCO2 = 25 mm Hg pO2 = 58 mm Hg HCO3 = 13 mmol/L tHb = 12.4 g/L QUESTIONS: 4. What clinical findings are most indicative of this patient’s impending failure?

You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

Dr. X claims that she has found a new remedy (carrot extract) to cure acne. She scores an interview with the science writer for a local newspaper, and gets a brief article written about her and her claims in that newspaper. The article does not contain any experimental evidence, but mentions that Dr. X accidentally splashed some carrot extract on her face and found that the acne was reduced a few days later. Student Y finds the article and cites it as a source for a paper he is writing for class, as evidence that acne has been cured. (a) Is this finding a fact, a theory, a hypothesis, or an observation? Explain why you think so. (b) Was it OK for Student Y to use the newspaper article as evidence for his paper? Explain why or why not.