Chemistry, 14.04.2020 23:29 shanicejordan

A cube of aluminum (Cp = 0.897 J/g. K) has a temperature of 325 K. It is placed in a beaker of cold water
If the aluminum cools to 301 Kas the water absorbs 815.7 J of heat, what is the mass of the cube?

Answers: 1

Show answers

Answers

Answer from: Quest

This is what i found “nuclear fuel is material used in nuclear power stations to produce heat to power turbines. heat is created when nuclear fuel undergoes nuclear fission. most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing and sustaining nuclear fission.” i hope this you for what your looking for. can you plz mark me brainliest?

Answer from: Quest

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

the ratio of the conjugate base to the acid required to attain the desired ph.

Another question on Chemistry

Chemistry, 21.06.2019 17:00

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Answers: 1

Answer

Chemistry, 22.06.2019 02:10

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Answers: 3

Answer

Chemistry, 22.06.2019 09:20

Sugar is dissolved in water. which is the solute? sugar neither both water

Answers: 1

Answer

Chemistry, 22.06.2019 18:00

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

Answers: 2

Answer

You know the right answer?

A cube of aluminum (Cp = 0.897 J/g. K) has a temperature of 325 K. It is placed in a beaker of cold...