Inferring Dentition and Diet in Extinct Great Apes by Looking at Extant Great Apes INTRODUCTION Knowing the diet of extant primate taxon opens up the possibility of predicting a good deal about its morphology and natural history. Morphology and natural history of extant primates is also important in making accurate inferences regarding their dentition and diet. However, when it comes to extinct primate taxon making dentition and dietary inferences are challenging and the evidence available
Molar mass is a fundamental and must-know term in chemistry. Anyone who studies chemistry begins the journey with this term. The molar mass of a substance is defined as “the mass of one mole of any substance where the carbon-12 isotope is assigned a value of exactly 12gmol-1. Its symbol is M. Molar mass is important because of its usefulness in various calculations. To chemistry students, it is a tool to solve many problems and exercises, as molar mass can be used to calculate the mass or the amount
will also include the equation for number of moles and volume of gas formed. I shall use my class notes as my reference. Number of Moles of gas = Volume of Gas (cm3) = Volume of Gas (cm3) Molar Volume (cm3) 24000cm3 Volume of Gas = Number of Moles x Molar Volume (cm3) = Number of Moles x 24000 cm3 Planning: Copper has two oxides; Cu2O and CuO Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written
Introduction and Background : The molar mass of a gas relates to the number of grams in one mole of that particular gas and all molar masses can be found on the periodic table of the elements. The objective of this lab is to compare the theoretical value of butane gas’s, C4H10 (g), molar mass with an experimental value where the gas from a lighter was released and measured by testing if the water displacement method, where a graduated cylinder is inverted in water and gas is released beneath it and
Introduction A molar pregnancy (hydatidiform mole) is a mass of tissue that grows in the uterus after conception. The mass is created by an egg that was not fertilized correctly. The egg then abnormally grows. It is an abnormal pregnancy and does not develop into a fetus. If a molar pregnancy is suspected by your health care provider, treatment is required. What are the causes? This condition is caused by an egg that is fertilized incorrectly so that it has abnormal genetic material (chromosomes)
predicted by the Hf (molar heat of formation). This is the energy change when 1 mole of a compound is formed from its elements. If it is exothermic (negative), then the compound is stable with respect to its elements. If it is endothermic (positive), then the compound is unstable with respect to its elements. In general, the lower the value of Hf, the greater the energetic stability of the compound with respect to its elements. The molar heat of formation of CuO is 155.2, and the molar heat of formation
#4- Molar Relationships INTRODUCTION The mole is an important concept in chemistry. This unit is the measure of atoms or particles present in a compound, which is represented by Avogadro’s number, 6.022*1023. Avogadro’s number can be used in conjunction with other measures, like mass, to determine the number of particles in a compound. This allows chemists to learn more about how a compound may react or the behaviors of different chemicals. Another important concept in chemistry in the molar mass
The Effect of a Range of Sucrose Solutions Upon Potato Tissue Hypothesis ========== As the concentration of sucrose increases, the mass of potato decreases. Apparatus ========= 5 Test Tubes Sucrose solution of 0.0, 0.2, 0.5, 1.0, and 1.5 Molarity 10 piece of Potato Tissue Cork Borer Scalpel Beakers Weighing Scales Method ====== A standard sized cylinder of potato tissue is put into a beaker. Using a cork borer of a known size, in order to cut the
Investigating the Effect of Sugar Solution on the Weight and Size of Potato Cells Aim: To investigate whether the different concentration of sugar solution will affect the weight and size of the potato cells. General background information: Osmosis is defined as the movement of water or any other solution's molecules from an area in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable membrane
times to ensure fair and accurate results from averaging. § Washing each apparatus that I use so that there is no pass over of acid or other substance. Plan § Starting with a 0.25 molar. § Fill a flask with 5cm³ 1 molar hydrochloric acid and 15cm³ of distilled water this will reduce the molar to 0.25. § The Tubing should be attached to the gas syringe and the other end put in a bung which will be eventually be inserted in the lid of the flask (fig 1). § At the last second
A Comparison of the Water Potential of Potato and Sweet Potato Tubers Aim The aim of this experiment is to compare the water potential of two different plant tissues, potato and sweet potato tubers, by measuring the gain or loss of water when samples of the tissue are placed in a range of concentrations of sucrose solutions. Background information Osmosis is the movement of water molecules from a region of their higher concentration to a region of their lower concentration through
do it all on the same day and maybe change the limits of the products so that the results we got could be more accurate and we would have less anomalous results like the 2.5 molar experiment. However, if I did this experiment again I would expect the same results and patterns that I have got apart from the 2.5 molar and 3 molar experiments.
"Chemistry"). To calculate the percent composition of element of a compound, the molar mass of the compound must be found by adding up the masses of each atom in the compound (Texas A&M University, "Chemistry"). This can be done by using a periodic table. Then the mass of the element must be calculated by adding up the mass of its atoms (Texas A&M University, "Chemistry"). Then the mass of the element must be divided by the total molar mass of the compound and then be multiplied by 100 (Texas A&M University
will result in an increase in the speed of the rate of reaction it has with Calcium Carbonate. I also think that when you double the concentration you will double the rate of reaction. I believe this because my Preliminary work shows that 2.0 molar is a fast reaction so this means that the bigger the concentration of Hydrochloric acid the quicker the reaction time will be. It also shows that when you double the concentration you double the rate of reaction, but that could just be coincidence
another, energy is transferred between these particles and so energy is constantly gained or lost. The number of collisions with enough energy greater or equal to the activation energy, determines the rate of reaction. I predict that the 2 molar of hydrochloric acid when reacting with marble chips will produce the most carbon dioxide and in the least amount of time, because they are more reactants in the solution and more particles that will collide with the reacting particles. Also because
weight of the chip may vary as much as 0.02 g each way, which will make it a lot easier to do, but may provide me with less accurate results. I will use 5 different molar solutions of 20 cm3 each, shown to the right. 0M (water), 0.5M, 1M, 1.5M and 2M. I will create 0.5 molar solutions by mixing 10cm3 of water and 10cm3 of 1 molar solution. I will use 3 of each solution to ensure that my results are correct, and to prevent any anomalies disturbing my result graphs. One of each solution will be
hundred seconds. · The three grams of marble chips reacted too fast due to a grater surface area being covered; therefore, we tried 1.5 grams worth of marble chips. · For the 1.5 molar acid experiment we did the same steps as above. Below is a diagram of what we did….. This is a table of a three molar acid, and how long it took for the carbon dioxide to be produced.
gaseous state with its volume, temperature, and pressure (Equation 1). Hence, the Ideal Gas Law can be used to determine the molar mass of a volatile liquid from the density of the vapor. Molar mass is defined in terms of the mass in grams of a substance per mole of that substance, g/mole. Equation 2, which is derived from the Ideal gas law, will be used in solving the molar mass of the unknown substance (AP Chemistry, 2010). Equation 1: Ideal Gas Law Equation 2: Equation derived from Ideal
In this experiment, we determined the isotonic and hemolytic molar concentrations of non-penetrating moles for sheep red blood cells and measured the absorbance levels from each concentration. The results concluded that as the concentration increased the absorbance reading increased as well. A higher absorbance signifies higher amounts of intact RBCs. The isotonic molar concentration for NaCl and glucose is 0.3 M. The hemolysis molar concentration for NaCl and glucose is 0.05 M. Adding red blood
the pink indicator to turn clear when hydrochloric acid is added to it. Independent variable: We are changing the molar of hydrochloric acid we are adding to the gelatine cubes. The molars range from 1-3. Apparatus: * 1 measuring cylinder * 1 test tube * 1 stop clock * A large gelatine cube containing indicator and NaOH * Hydrochloric acid ranging from 1-3 molars * A scalpel Diagram: Method: * Take the large gelatine cube and cut into 15 equal pieces * Place on