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question 1 & 2 please
uiz Instructions Question 1 Which of the following indicates a chemical...
1.Which medium above supports the best growth of bacteria? 2. Which of the following will result...
1.Which medium above supports the best growth of bacteria? 2. Which of the following will result when 1% to 5% agar is added to nutrient broth, autoclaved, and cooled? a semi-solid medium a pure culture a liquid medium a mixed culture a solid medium
Question 2 2 pts Which chemical is expected to have the highest boiling point? O Cu...
Question 2 2 pts Which chemical is expected to have the highest boiling point? O Cu О НЕ 0 H₂O CH3CH2CH3 Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going through phase change is graphed with temperature on the x-axis, and heat added to the system on the y-axis, the phase change is clear because...
6. Precipitation reactions are best classified as which type of reaction?(2 points) a. synthesis b. decomposition c. s...
6. Precipitation reactions are best classified as which type of reaction?(2 points) a. synthesis b. decomposition c. single-displacement d. double displacement 7. Acid-base reactions are best classified as which type of reaction? (2 points) a. synthesis b. decomposition c. single-displacement d. double displacement 8. Circle which observation is not consistent that a chemical reaction is occurring. (2 points) a. solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The...
1. Part 2 white complete structures for the major product(s) resulting from the following reactions. Ao...
1. Part 2 white complete structures for the major product(s) resulting from the following reactions. Ao Propanal + 2,4-dinitrophenylhydrazine --- 2-hexanol + ZnCl2 + HCI ----.. . . isopropyl alcohol + CrO3/H2S04 --- 1-butene + Br2/CH2Cl2 → In the space below, draw structures for the following: a. Bromobenzene b. Butanal Acetophenone Benzaldehyde e. Aniline 3. The following observations are frequently made in the laboratory. In each case below state in The following cheer brief terms, the deduction or deductions which...
Question 1 & 2. which of the following statements is true? the vapor pressure of a...
Question 1 & 2.
which of the following statements is true?
the vapor pressure of a liquid _____ as the strength of its
intermolecular forces increases.
Question 1 Select one answer Which of the following statements is true? 10 points A. When heat is added to ice at 0 °C the ice begins to melt, but the temperature remains constant until all of the ice becomes liquid water. B. When heat is added to ice at 0°C the ice begins...
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are:...
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are: O Dipole-Dipole Forces Olon-Dipole Forces O Hydrogen Bonding London Dispersion Forces Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going through phase change is graphed with temperature on the x-axis, and heat added to the system on the y-axis,...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e....
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are:...
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are: Dipole-Dipole Forces Olon-Dipole Forces O Hydrogen Bonding London Dispersion Forces Question 2 2 pts Which chemical is expected to have the highest boiling point? O Cu ОНЕ 0 H₂O CH3CH2CH3 Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going...
Question 6 1 pts Solid Pb(NO3)2 is added to a solution that contains CO2- anions. Which...
Question 6 1 pts Solid Pb(NO3)2 is added to a solution that contains CO2- anions. Which best describes the condition when PbCO3 precipitates out of the solution? Ksp of PbCO3 is 7.4 x 10-14 Ksp of PbCO3 Qof PbCO3 Qof Pbcoз > Ksp of PЬCOЗ Qof Pbco <Ksp of PЬCOЗ
22 & 23 please QUESTION 22 Which of the following statement(s) about electrolytes are true? 1....
22 & 23 please
QUESTION 22 Which of the following statement(s) about electrolytes are true? 1. Electrolyte solutions conduct electricity because electrons are freely moving through the solution. 2. Electrolyte solutions conduct electricity because ions are moving through the solution 3. When methanol (CH3OH) is dissolved in water, an electrolytic solution results 4. When sulfuric acid acid is dissolved in water, a conducting solution results 5. If an aqueous solution containing sodium chloride is diluted, the conductivity will go down...
Question 2 2 pts Which chemical is expected to have the highest boiling point? O Cu О НЕ 0 H₂O CH3CH2CH3 Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going through phase change is graphed with temperature on the x-axis, and heat added to the system on the y-axis, the phase change is clear because...
6. Precipitation reactions are best classified as which type of reaction?(2 points) a. synthesis b. decomposition c. single-displacement d. double displacement 7. Acid-base reactions are best classified as which type of reaction? (2 points) a. synthesis b. decomposition c. single-displacement d. double displacement 8. Circle which observation is not consistent that a chemical reaction is occurring. (2 points) a. solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The...
1. Part 2 white complete structures for the major product(s) resulting from the following reactions. Ao Propanal + 2,4-dinitrophenylhydrazine --- 2-hexanol + ZnCl2 + HCI ----.. . . isopropyl alcohol + CrO3/H2S04 --- 1-butene + Br2/CH2Cl2 → In the space below, draw structures for the following: a. Bromobenzene b. Butanal Acetophenone Benzaldehyde e. Aniline 3. The following observations are frequently made in the laboratory. In each case below state in The following cheer brief terms, the deduction or deductions which...
Question 1 & 2.
which of the following statements is true?
the vapor pressure of a liquid _____ as the strength of its
intermolecular forces increases.
Question 1 Select one answer Which of the following statements is true? 10 points A. When heat is added to ice at 0 °C the ice begins to melt, but the temperature remains constant until all of the ice becomes liquid water. B. When heat is added to ice at 0°C the ice begins...
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are: O Dipole-Dipole Forces Olon-Dipole Forces O Hydrogen Bonding London Dispersion Forces Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going through phase change is graphed with temperature on the x-axis, and heat added to the system on the y-axis,...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
Question 1 2 pts The strongest intermolecular forces in a sample of pure propane (CH3CH2CH3) are: Dipole-Dipole Forces Olon-Dipole Forces O Hydrogen Bonding London Dispersion Forces Question 2 2 pts Which chemical is expected to have the highest boiling point? O Cu ОНЕ 0 H₂O CH3CH2CH3 Question 3 2 pts Which material is expected to have the highest surface tension? O CH3CH2CH2CH3 O CH3OCH3 O H20 O CH3CH2OH Question 4 2 pts When a heating curve for a material going...
Question 6 1 pts Solid Pb(NO3)2 is added to a solution that contains CO2- anions. Which best describes the condition when PbCO3 precipitates out of the solution? Ksp of PbCO3 is 7.4 x 10-14 Ksp of PbCO3 Qof PbCO3 Qof Pbcoз > Ksp of PЬCOЗ Qof Pbco <Ksp of PЬCOЗ
22 & 23 please
QUESTION 22 Which of the following statement(s) about electrolytes are true? 1. Electrolyte solutions conduct electricity because electrons are freely moving through the solution. 2. Electrolyte solutions conduct electricity because ions are moving through the solution 3. When methanol (CH3OH) is dissolved in water, an electrolytic solution results 4. When sulfuric acid acid is dissolved in water, a conducting solution results 5. If an aqueous solution containing sodium chloride is diluted, the conductivity will go down...
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