Functions of the following equipment's are-
1. ASPIRATOR is a suction machine .It is a medical device that is primarily used for removing obstructions such as mucus, saliva, blood, or secretions — from a person's airway.
2.Beakes are useful as a reaction container for holding liquid or solid samples. They are also used for catching liquids from titrations and filtrates from filtering operations.
3. pipettes are used in laboratory to measure out or transfer small quantities of liquid, in volumes of milliliters (mL), microliters (μL).
4. fire tongs are used for holding hot apparatus.
5. test tubes are used for holding solutions and carrying out the reactions.
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Assuming 100% dissociation of K3PO4 you get each molecule of K3 PO4 dissociates into four particles: 3 K4 cations and 1 PO4 - anion. That means that Van't Hoff factor, i, is 4. i = 4. So, the decrease in freezing point of the water solution is Delta Tf = i * Kf * m. Where Kf is the molal cryoscopic constant of water = 1.86 °C /m; and the molality m = 2.59 m => Delta Tf = 4 * 1.86 °C / m * 2.59 m = 19.3 °C. And the freezing point is the normal freezing points less 19.3°C = 0°C - 19.3°C = - 19.3°C. The increase in the boiling point Delta Tb = i * kb * m = 4 * 0.512 °C /m * 2.59 m = 5.3°C => <span>Tb = normal boiling point + 5.3°C = 100°C + 5.3°C = 105.3°C.</span>
Answer:
B
Explanation:
H2 + Cl2 → 2HCl
Hmm redox reaction.
Energy is needed to break the bonds of H-H in H2 and Cl-Cl in Cl2
Answer: There are three different types of intermolecular forces in terms of strength. They are (strongest to weakest) hydrogen bonding, dipole-dipole and Van der Waals' forces.
Explanation: Mark me brain, give 5 stars and a thank you
6:c
7: might be ice but im not really sure, hope you do well.
Explanation:
