Chemistry » Page 34

Chemistry

Efrain Barron

Name one property that all metalloids have in common.

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Chemistry

Eliezer Gonzales

What kind of bond is formed between successive amino acids during translation?

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Chemistry

Gloria Townsend

Calculate the molarity of each aqueous solution: (a) 25.5 ml of 6.25 m hcl diluted to 0.500 l with water (b) 8.25 ml of 2.00*10-2 m ki diluted to 12.0 ml with water

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Chemistry

Gustavo Andrade

How many grams of mercury are needed to react completely with 157g of sulfur to form hgs?

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Chemistry

Juliana Moses

Calculate the mass of tetraborane (B4 H10) that contains a billion (1.0 x 10 * 9) boron atoms. Be sure your answer has a unit symbol if necessary, and round it to significant digigits.

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Chemistry

Haylie Colon

Starvation and uncontrolled diabetes mellitus can both result in

a. ketoacidosis, implying that high levels of ketone bodies in the blood must be well‑tolerated.

b. ketoacidosis, implying that the body of a person with uncontrolled diabetes mellitus is acting metabolically as though it is starving.

c. ketoacidosis, though in neither case due to overproduction of ketone bodies by the liver, but rather because cells are impaired in uptake of ketone bodies.

d. ketosis, implying that ketoacidosis is a result of uncontrolled diabetes mellitus but not starvation.

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Chemistry

Abraham Herrera

13. When iron nad is put in to a beaker containing copper sulphate solution.

of the solution slowly change in to Green

a) Why does the colour of the solution change?

b) Write the equation involved in this process?

c) Is it a chemical or physical change?

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Chemistry

Izaiah Leon

To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 4.00 molmol of gas DD measured at 251 ∘C∘C in a 1.75-LL container assuming real behavior? Express your answer with the appropriate units.

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Chemistry

Asa Pennington

What is significant about the elements within the same group of the periodic table?

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Chemistry

Danica Fritz

Darwin observed a variety of tortoises on the Galapagos Islands. These observations provided evidence for which of these statements?

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Chemistry

Jorge Palmer

Which statement correctly describes the actual yield and the theoretical yield of a reaction?

A.) The actual yield is calculated from the reactant amounts, but the theoretical yield must be measured for each instance of a reaction.

B.) The actual yield is calculated from the amount of the limiting reactant, and the theoretical yield is calculated from the amount of the excess reactant.

C.) The actual yield depends on the reaction conditions, but the theoretical yield varies only with reactant amounts.

D.) The actual yield represents the maximum yield possible, and the theoretical yield assumes perfect reaction conditions.

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Chemistry

Sage

How does heat get from the stove burner into

your soup?

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Chemistry

Melissa Browning

Determine how many grams of sodium phosphate would be needed to prepare 455 ml of a 2.50% (m/v) sodium phosphate solution

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Chemistry

Sleeping Beauty

Changes in state are called phase changes. A phase change is a change from one physical state (gas, liquid, or solid) to another. The amount of energy necessary to melt 1 mole of any solid is called its enthalpy of fusion. The amount of energy necessary to vaporize 1 g of any substance is called its enthalpy of vaporization. The enthalpy of fusion of solid sodium is 2.60 kJ/mol. Calculate the energy required to melt 43.6 g of solid sodium.

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Chemistry

Carsen Reynolds

Why would the amount of water affect the speed of cooking a piece of meat

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