A 125 mL flask was obtained. The square of aluminum was fashioned over the flask by laying the foil over the mouth and folding the sides down. A pin was then obtained and was used to poke a tiny hole in the center of the aluminum cap.…
1.) 2 KMnO4 + 5 K2C2O4 + 8 H2SO4 = 2 MnSO4 + 10 CO2 + 8 H2O + 6 K2SO4…
9) Put 4mL of stock solution and 1mL of water in a test tube to make the second solution.…
2. To determine the densities of water, an unknown liquid, a rubber stopper, and an unknown rectangular solid.…
1. The dependent variable is the rate of the growth of the plant and then the independent variable would be the time of day that she waters the plant.…
A. Create a solubility curve for NH4Cl by plotting g NH4Cl/100 mL H20 on the y-axis, and crystallization temperature on the x-axis. Make sure to label each axis. On the same graph as the solubility curve for NH4Cl, add the solubility curve for NaCl using the data provided in Data Table 3.…
An ion is an atom or a molecule with a positive or a negative charge due to the loss or gain of one or more electrons. Ionic solids are salts (such as NaCl) that are held together by a strong force of attraction between ions of opposite charge. Molecules are the smallest physical units of an element or a (chemical) compound. Ionic solids are also known as salts because salts are ionic compounds that are formed from a reaction between an acid and a base.…
1. In your own words, list the 5 characteristics an Earth material must have in order to be considered a mineral.…
The first step to conduct this experiment is to set up your ramp, whether it is a pool noodle or flexible pipe insulation. Adjust the ramp to the correct height you chose for this investigation. Next, place the 4 textbooks exactly 84 centimeters from the wall. Then place the cup exactly 40 centimeters from the 4 textbooks. Now it is time to start the actual experiment. Take your marble and place it at the top of the ramp. Let the marble roll to to end of the ramp and record whether or not the marble landed inside of the cup. Repeat these steps adjusting the height of the ramp as you go depending on where the marble lands. The data was used to determine what height was the best for the marble to land inside of the target cup. The data was analyzed by comparing the different heights to the number of times the marble landed in the target…
In this experiment our main objective was to create three gaseous oxides CO₂, SO₂ and NO₂ by using data that was collected using a pH sensor which was connected to a laptop with LoggerPro and Vernier. We created the gases by bubbling each gas into the water to create the three acidic solutions we were looking for. Once that step was completed, the pH levels of all three solutions were compared to each other to see the different strengths of each solution. As a result we found that NO₂ had the highest pH level change out of all the three gasses that we collected.…
Second trial: (the two balls the large one and the small one fell at the same time)…
The article in New York Times talks about the spacecraft that was sent into space 36 years ago and recently NASA was able to send a newer version of it into space. Voyage 1 was initially designed as a four-year mission to Saturn. It is the first spacecraft to exit our solar system. This will help scientists to explore the outside of our solar system. Voyage 1 stopped sending pictures however; it helped scientists to attain pictures of Saturn and Jupiter. Voyage 2 will be able to send better pictures and scientists expect it to exit our solar system in a few years. NASA has high hopes for the new and improved Voyage 2. By improving a spacecraft they will be able to get better samples and images of other planets further than Saturn and Jupiter and maybe even see what's outside of the solar system. They made a prediction that it will pass some stars and will be pulled by their gravity. I found this article interesting because nobody has yet seen what the outside of our solar system is like. Maybe NASA will be able to state some groundbreaking news from the new pictures that they will attain.…
The number of craters that form depend on the number and velocity of incoming fragments…
The mass percent of water was determined using the mass of water and dividing it by the total mass of the hydrate and then multiplying that answer by 100%. The number of moles of water in a hydrate was determined by taking the mass of the water released and dividing it by the molar mass of water. The number of moles of water and the number of moles of the hydrate was used to calculate the ratio of moles of water to moles of the sample. This ratio was then used to write the new and balanced equation of the dehydration process. The sample was then rehydrated to the original state and the percent of the hydrate recovered was calculated by using the mass of the rehydrated sample by the mass of the original hydrate and then multiplied by 100%.…
.2400 grams of the unknown compound. This is done in duplicate and purple-tinted precipitates are placed in Gooch crucibles. The precipitates are suction dried using ethyl alcohol then acetone to…