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A solution was heated in a Bunsen burner flame before heating, it was a clear colorless...
(X) A mysterious clear, pink liquid is found in a laboratory. Upon being heated, most of...
(X) A mysterious clear, pink liquid is found in a laboratory. Upon being heated, most of the liquid evaporates as colorless vapor, leaving behind a red solid. Based on these observations, the original pink liquid was most likely (a) an element (b) a compound (c) a homogeneous mixture (d) a heterogeneous mixture (xi) Would you classify the evaporation that happened in (xii) as a physical change or as a chemical change?
answer questions #1-7 and I'll send more information on question #7. We were unable to transcribe...
answer questions #1-7 and I'll send more information
on question #7.
We were unable to transcribe this imagesolution of a Mixture by Distillation 4 BACKGROUND s one of the most common methods of purifyinga ery simple method: a liquid is brought to a boil, the liquid becomes a gas the gas a liquid. It is a collected returns to the liquid state and the liquid acquire sufficient e from the liquid phase and enter into the s vapor phase Evaporation...
Make a diagram of each case using root cause analysis Case #1: Gas tap without burner...
Make a diagram of each case using root cause analysis Case #1: Gas tap without burner Two-way gas taps are commonly installed in school science laboratories. For one reason or another, not all gas taps are connected to Bunsen burners. In an attempt to light a Bunsen burner, a student mistakenly turned on the adjacent gas tap not connected to the burner. Gas emitted from the gas tap burst into flames. Fortunately, the student was able to turn off the...
help in filling in the Data sheet need help in the data sheet Data Sheet Name...
help in filling in the Data sheet
need help in the data sheet
Data Sheet Name Section: 23170 Mass Data Collected Mass of Container" (g) Mass of Container +KCIO(g) (before heating) ing Constant Mass Data: Mass of Container + KClig) after 1" heating 37.3273 37.3209 after 2d heating after 39 heating 37.5142 37.5114 final heating *All masses of container include the catalyst, MnO, and plastic holder (the same throughout the experiment) Results and calculations: Show your calculations in the right...
d. Suppose you mistakenly acidify the filtrate with HCl instead of with HNO3. What would you...
d. Suppose you mistakenly acidify the filtrate with HCl instead of with HNO3. What would you obser after completing the halide test, and what would that observation lead you to conclude? Organic Laboratory Technique Primer Sodium Fusions and lon Testing Background: The elements that commonly occur in organic compounds along with carbon, hydrogen, and oxygen, are: nitrogen sulfur, and the halogens. The detection of these latter three elements depends on converting them into water soluble lons (CNS , and X...
this is a lab of Percentage of Oxygen in Potassium Chlorate Percentage of Oxygen in Potassium...
this is a lab of Percentage of Oxygen in Potassium
Chlorate
Percentage of Oxygen in Potassium Chlorate Purpose of the lab Te esperimentar e te m o rgen in een constante decoration of poche Introduction The thermal decomposition of potassium chore can be described by the following 2KCIO 2 Cl +30 Ent epeal tehnic p e cale from the KCIO We poschodecomposes simply by heating the reaction is very Actitud is a m a ture accent the reaction, we not...
Food and beverage containers are commonly made of tin, steel, aluminum, or a combination of metals....
Food and beverage containers are commonly made of tin, steel, aluminum, or a combination of metals. Suppose that a laboratory procedure requires a can be made of aluminum. Which property can be used to determine if a can is likely to be made of aluminum? O color Odensity volume mass What is the density of a pear that occupies 32 cm and has a mass of 42 g O 0.7619 g-cm 0 2.0 g.cm O 1.3125 g-cm O 0.76 g.cm...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weig...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
Read the information before each question, then answer the question right there. Don't read ahead. I...
Read the information before each question, then answer the question right there. Don't read ahead. I want you to think about each set of information and what that means at the time. Your first impressions might be different as new information is presented. That is to be expected as patients exhibit new signs and symptoms, and new information from the laboratory or other sources becomes available. Ted is a 67-year-old male with no significant past medical history, except for occasional...
(X) A mysterious clear, pink liquid is found in a laboratory. Upon being heated, most of the liquid evaporates as colorless vapor, leaving behind a red solid. Based on these observations, the original pink liquid was most likely (a) an element (b) a compound (c) a homogeneous mixture (d) a heterogeneous mixture (xi) Would you classify the evaporation that happened in (xii) as a physical change or as a chemical change?
answer questions #1-7 and I'll send more information
on question #7.
We were unable to transcribe this imagesolution of a Mixture by Distillation 4 BACKGROUND s one of the most common methods of purifyinga ery simple method: a liquid is brought to a boil, the liquid becomes a gas the gas a liquid. It is a collected returns to the liquid state and the liquid acquire sufficient e from the liquid phase and enter into the s vapor phase Evaporation...
help in filling in the Data sheet
need help in the data sheet
Data Sheet Name Section: 23170 Mass Data Collected Mass of Container" (g) Mass of Container +KCIO(g) (before heating) ing Constant Mass Data: Mass of Container + KClig) after 1" heating 37.3273 37.3209 after 2d heating after 39 heating 37.5142 37.5114 final heating *All masses of container include the catalyst, MnO, and plastic holder (the same throughout the experiment) Results and calculations: Show your calculations in the right...
d. Suppose you mistakenly acidify the filtrate with HCl instead of with HNO3. What would you obser after completing the halide test, and what would that observation lead you to conclude? Organic Laboratory Technique Primer Sodium Fusions and lon Testing Background: The elements that commonly occur in organic compounds along with carbon, hydrogen, and oxygen, are: nitrogen sulfur, and the halogens. The detection of these latter three elements depends on converting them into water soluble lons (CNS , and X...
this is a lab of Percentage of Oxygen in Potassium
Chlorate
Percentage of Oxygen in Potassium Chlorate Purpose of the lab Te esperimentar e te m o rgen in een constante decoration of poche Introduction The thermal decomposition of potassium chore can be described by the following 2KCIO 2 Cl +30 Ent epeal tehnic p e cale from the KCIO We poschodecomposes simply by heating the reaction is very Actitud is a m a ture accent the reaction, we not...
Food and beverage containers are commonly made of tin, steel, aluminum, or a combination of metals. Suppose that a laboratory procedure requires a can be made of aluminum. Which property can be used to determine if a can is likely to be made of aluminum? O color Odensity volume mass What is the density of a pear that occupies 32 cm and has a mass of 42 g O 0.7619 g-cm 0 2.0 g.cm O 1.3125 g-cm O 0.76 g.cm...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
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