to the appropriate significant figures. 15-1 Molarity Problems: (M = moles/ liter ) 1. What is the molar concentration of a 415 ml solution containing 0.745 moles of HCl? (A: 1.80 M HCl) 2. What is the molar concentration of an acetic acid (CH3COOH) solution containing 3.21 moles in 4.50 liters? (A: 0.713 M) 3. How many moles of KI are present in 125 ml of 0.500 M KI? (A: 0.0625 mol KI) 4. How many moles of ammonia (NH3) are present in .360 L of 2.13 M NH3 solution in water
Premium Water Concentration
The purpose of this experiment was to study the effect acid rain has on seed germination and after performing this experiment is can be concluded that acid rain has a negative effect on seed germination. When seeds are soaked in an acidic solution the process of germination slows. Acidic solutions‚ while do slow growth of a seed‚ they do not kill the seed. A seed can be dormant for a majority of its lifespan‚ seeds watered with acid solutions stayed in a dormant condition. For example‚ trial three
Premium
The Great Depression Do you think you’d be able to survive during a time when people could barely make enough money to put food on the table? The Great Depression is known as the worst and longest economic crisis to hit anywhere. This was the period in which the highest unemployment rates and low incomes were experienced by the industrialized Western world. The financial crisis affected virtually every section of the economy‚ and therefore‚ affected the livelihood of people everywhere
Free Great Depression Unemployment Wall Street Crash of 1929
MELTING POINT AND BOILING POINT OF ORGANIC COMPOUNDS ------------------------------------------------- ABSTRACT The melting point (MP) and the boiling point (BP) are probably the most widely used physical constant in the field of science. Determining the boiling point and the melting point of a compound helps you to characterize an unknown solid in a quick‚ easy and cheap way. The temperature at which a compound turns from a solid state to a liquid state is known to be the melting point. On the
Premium Melting point Carboxylic acid Organic chemistry
Etiologies of Depression Biological Etiologies Evolution -it signifies to others around you that you need help (Hagen); the symptoms are a call for help from others -a survival instinct to help the species continue on -suicide or threat of suicide: a cry for social help -enhancing the helping instinct in next generations -natural selection -helps find potential mates to decide what genes to pass on Genes -twin studies (Nurnberger and Gershon) -5HTT -a short allele that
Premium Major depressive disorder Selective serotonin reuptake inhibitor Cognition
serotonin reuptake inhibitors as a treatment for depression in children and adolescents. The aim of the study is to test the effect of fluoxetine in the acute treatment of depression. The effects were determined by a randomized double blind control trial in which the control group were compared to the placebo group. The main findings of the article were that the control group given the SSRI fluoxetine showed greater improvements in terms of treatment of depression than the placebo group‚ and the SSRI showed
Premium Selective serotonin reuptake inhibitor Major depressive disorder
apply outside the sample/population studied. 1. In “Gender Differences in Depression”‚ by Susan Nolen-Hoeksema‚ the subject of depression is discussed in brief detail covering the general stressors placed on each sex and the differing response by each as well as some gender specific stressors. In short‚ she claims that females suffer more stressful experiences which‚ in turn‚ give women a higher susceptibility to depression. For example‚ socially‚ women are less dominate and have to suffer the adverse
Premium Gender Female Gender role
The Great Depression The story about The Great Depression is quite shocking‚ I just found out that The depression originated in the U.S.‚ began around may 1932 with the “three years depression” of thousands of army veterans who were looking for their bonus‚ and after the fall in stock prices that began around September 4‚ 1929‚ and became worldwide news with the stock market crash of October 29‚ 1929 (known as Black Tuesday) and now I totally understand what stock marker crash really is. Crashes
Premium Wall Street Crash of 1929 Great Depression Stock market
Professor Wayne Drevets discusses the relationship of stress and depression (http://www.g2conline.org/2076). He explains that a mutation in the Serotonin Transporter can contribute to depression‚ but only in situations that there was stress early in life. I found it particularly interesting that the same mutation in the Serotonin Transporter would not cause depression in an individual who did not experience early life stressors. This information would indicate that the mutation was not the cause
Premium Major depressive disorder Suffering Serotonin
study of planned or unplanned pregnancy to postpartum depression. The study will determine which factors can be considered as the most prevalent for postpartum depression. The descriptive quantitative method of research design establishes association between variables. This research design is being utilized to determine the relationship between the independent variable (planned and unplanned) and the dependent variable (postpartum depression). Research Environment The study is
Premium Scientific method Childbirth Research