Emiko

This page lists questions and answers that were posted by visitors named Emiko.

Questions

The following questions were asked by visitors named Emiko.

_____ was responsible for first grouping elements into triads based on similar properties. A. Döbereiner B. Moseley C. Dalton D. Mendeleev

which of the following is true regarding the transition elements? A. Multiple oxidation states resulting from the involvement of d electrons in bonding is a characteristic of transition elements. B. Most transition elements have lower melting and boiling...

What type of reaction does the following equation represent? AgNO3 + NaCl ---> AgCl + NaNO3 A. Single-displacement reaction B. Synthesis C. Combustion D. Double-displacement reaction

Which of the following is true? A. Group 1 elements are more reactive than the group 2 elements because they have more valence to lose. B.Lithium is the least reactive element in group, because its valence electron is held more tightly than the others in...

What is the electronegativity difference for a bond between potassium and iodine? A. 3.3 B. 0.4 C. 4.6 D.1.7

Covalent bonding (with an electronegativity difference below 0.5) results when fluorine bonds with A. hydrogen B. potassium C. iodine D. fluorine

Which element's atomic radius changes the most in size when it becomes ionized? A. Fluorine B. Lithium C. Sodium D. Chlorine

What is the molecular mass of potassium hydrogen carbonate (KHCO3)? A. 110g/mol B. 84g/mol C. 68g/mol D. 116g/mol

According to Boyle, pressure and volume of a confined gas are ____ proportional, and according to Charles, the volume of a gas at a constant pressure is____ proportional to its Kelvin temperature. A. directly; inversely B. directly; not C. inversely; dire...

The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases

You mix soda water, fruit punch concentrate, and ginger ale in the ratio of 1 : 2 : 5 to make fruit punch. How many pints of each ingredient should you use to make 4 gallons of fruit punch?

There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of boys to girls to remain the same?

Which word in an expression would translate to ADD mathematically? A. difference. B. The same as. C. Out of D. total.

The student claims that a ball dropped 3.0 meters would have fewer than 96 joules of kinetic energy upon hitting the ground. Is she correct? Why? The student claims that a ball dropped 3.0 meters would have fewer than 96 joules of kinetic energy upon hitt...

Which of the following describes a claim?(1 point) A. a statement that connects evidence to a reason B. a statement that everyone in the audience will agree with C. a statement that presents the speaker’s position or opinion D. a statement that will grab...

Answers

The following answers were posted by visitors named Emiko.

like which one changes the most in size.

what do u mean?

D because of the weight of the marbles, it would sink, but the toothpicks won't.

Thanks this helped alot

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