Why is pure water Study guides, Class notes & Summaries

In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? 10-8 M Fungi are able to reproduce asexually by creating conidiospores and sporangiospores. Which of the following is an accurate explanation for why it is advantag...

Test Bank for Alcamos Fundamentals of Microbiology 9th Edition by Pommerville Test Bank for Alcamos Fundamentals of Microbiology 9th Edition by Pommerville Chap01, Chapter 1 Multiple Choice 1. Who was one of the early natural philosophers who coined the name “cella” for the empty cork spaces that became the word we use today, “cells”? A. Robert Hooke B. Zacharias Janssen C. Francesco Stalluti D. Giovanni Faber Ans: A 2. Leeuwenhoek made lenses that allowed him to magnify o...

LEG2601 Legal Aspects of Environmental Management 100 Marks 24 Hours THIS PAPER CONSISTS OF 6 (SIX) PAGES – INCLUDING INSTRUCTIONS. Honesty Declaration: In writing and submitting this paper you affirm that: 1. You understand what academic dishonesty entails and are aware of UNISA’s policies in this regard. 2. You have not allowed, and will not allow, anyone to copy your work with the intention of passing it off as his or her own work. 3. You did not make use of another ...

GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Version: 1.0 Final *JUN238464C2H01* IB/M/Jun23/E7 8464/C/2H For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Tuesday 13 June 2023 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at t...

Test Bank For Understanding Pharmacology Essentials for Medication Safety, 2nd Edition, Workman & LaCharity 100% A+ GRADED (ALL CHAPTERS COVERED). MULTIPLE CHOICE BASIC CONCEPTS 1. Which health care professional has the major responsibility for dispensing prescribed drugs under the direction of a pharmacist? a. Physician b . Nurse practitioner c. Licensed nurse d . Pharmacy technician ANS: D The physician and nurse practitioner have the major responsibility for prescribing drug...

Praxis 5442 Middle School Practice Questions with Complete Solutions A book is at rest on a tabletop. A teacher asks students to sketch the forces exerted on the book. Which of the following student diagrams best depicts all the forces exerted on the book? For an object at rest, forces must be balanced. The student diagram correctly depicts the balanced forces acting on the book, the force of gravity directed downward, and the force exerted by the table directed upward. A certain spec...

In what ways are microorganisms important to humans? correct answers They're important in fermentation reactions, they produce biofuel Studying microorganisms help with vaccination and antibiotic therapy We use microorganisms to purify our water Used in pasteurization so that food is safe to eat What is a bacterial colony and how is one formed? correct answers A colony forms by placing a single microbial cell on a solid nutrient medium where it can grow and divide into millions of cells. ...

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), ...

CHM 113 Exam Questions And Answers (Verified And Updated) Density - answermass divided by volume Specific Gravity - answerThe ratio of the density of a substance to the density of water Intensive property - answerProperties independent of mass. Examples: density, specific heat, equivalent weight Extensive property - answerProperties dependent of mass. Example: volume and mass Volume of a cylinder - answerV = pi(r)^2h Mass of water displaced by a rock with 143g in air and 82 g in water - ...

Explain the significance of the hydrogen bond correct answers •Similar to ionic bond but weak •Polarity causes water molecules to form weak (hydrogen) bonds between water molecules •Although the hydrogen bond between molecules is only 5% as strong as the bonds between hydrogen and oxygen (covalent bonds), it accounts for many of water's important properties •The way we see water today is almost a gel because of the hydrogen bonds Special properties of water (hydrogen bond is behin...