All categories

3 years ago

Which of the following is a transuranium element? Ra Am Tc Pa

1 answer:

3 0

Am - it has an atomic number of 95 which is greater than 92.

Transuranium elements are elements with atomic levels greater than 92

You might be interested in

A carbohydrate such as glucose has a great deal of ______ energy.

mihalych1998 [28]

Answer:

Chemical energy

Explanation:

Energy in carbohydrates is stored as chemical energy which is released when the carbohydrate is broken down by the body to give glucose and ATP. Animals eat carbohydrates as energy molecules from which they derive energy from the stored chemical energy.

6 0

3 years ago

Given a solution with a hydroxide ion concentration, oh=3.73×10^-5,what is the ph

Stells [14]

Answer:

pH = 9.73

Explanation:

pOH is the negative logarithm of the molar concentration of hydroxide ions and pH is the negative logarithm of the concentration of hydronium ions.

The mathematical expression to determine pOH is:

$pOH=-\log [OH^-]$

Where [OH⁻] means the molar concentration of hydroxide ions.

Substituting:

$pOH=-\log {(3.73\times 10^{-5})$

$pOH=4.43$

pH and pOH are related by the equation:

$pH+pOH=14$

From which:

$pH=14-pOH\\\\pH=14 - 4.43\\\\pH=9.57\leftarrow answer$

8 0

3 years ago

What is a small-ball shaped organelle that helps the cell break down nutrients and old cell parts.

Gemiola [76]

Lysosome: only ones that break down old cell parts

6 0

3 years ago

The solubility of three compounds in water is shown in the table above. What best explains the observations shown in the table?

kotegsom [21]

Answer:

D) Lead (II) hydroxide is least soluble because the hydroxide ions in water decrease the dissociation of the ions due to the common ion effect.

Explanation:

8 0

3 years ago

Read 2 more answers

A brick has dimensions of 15 cm x 6.0 cm x 12 cm. What is the volume of the brick in cubi meters?

Likurg_2 [28]

Convert all of the units from centimeters to meters by moving the decimal point over to the left two digits.

0.15 m x 0.06 m x 0.12 m

Volume = length x width x height
= 0.15 x 0.06 x 0.12 = 0.00108 m^3

6 0

3 years ago