What is the orbital or electronic geometry of a molecule with 0 nonbonding electron pairs and 2 bonding electron pairs?

If the standard solutions had unknowingly been made up to be 0.0024 m agno3 and 0.0040 m k2cro4, would this have affected your r

Mnenie [13.5K]

2AgNO3+K2CrO4⇒Ag2CrO4(s)+2KNO3
Hence by mixing 0.0024M AgNO3 and 0.004M
K2CrO4, we will have Ag2CrO4 which is precipitated out and leave us with
0.0024M KN03 which is mixed with (0.004-0.0024/2)M, it can be 0.0028M, of K2Cr04

6 0

3 years ago

Read 2 more answers

The substance on which the enzyme acts is called the _____ chemical.

Serga [27]

Answer:

the answer is A

Explanation:

it is substrates because ,Enzymes are specialized proteins that catalyze or speed up chemical reactions within cells. The substance upon which an enzyme acts is called a substrate. Substrates are small molecules.

8 0

3 years ago

¿Cuántos gramos de H2O habrá en 3,0115x1023 moléculas de agua?

jolli1 [7]

Answer : The weight of water is 9 g

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given molecules}}{\text{avogadro's number}}=\frac{3.0115\times 10^{23}}{6.023\times 10^{23}}=0.5moles
$

1 mole of water $(H_2O)$ weighs = 18 g

0.5 moles of water $(H_2O)$ weighs = $\frac{18}{1}\times 0.5=9g$

Thus the weight of water is 9 g

6 0

3 years ago

4. A piece of metal weighing 0.0713 g was placed in a eudiometer containing dilute aqueous HCl. After the metal fully dissolved,

Anastasy [175]

Complete Question

4. A piece of metal weighing 0.0713 g was placed in a eudiometer containing dilute aqueous HCl. After the metal fully dissolved, 23.5 mL of hydrogen gas was collected by displace-ment of water and a 400 mm column of water was observed. The water temperature was 258C and the barometric pressure was 758.8 mm Hg (torr). Refer to the Introduction and data sheet to solve the following problems.

a) What is the vapor pressure of the water vapor in the column? (Consult Appendix E.)

b) What is the pressure of the water column expressed in mm Hg (torr)? The density of mercury is 13.6 g/mL.

c) Calculate the pressure of the hydrogen gas above the water in the column.

d) Calculate the volume occupied by the hydrogen gas at STP.

Answer:

a) $25\textdegree C=23.8 torrs$

b) $P_w=758.8$

c) $P_w=758.8=735torr$

d) $V_2=20.82mL$

Explanation:

From the question we are told that:

Metal weight $M_m=0.0713g$

Volume Hydrogen $V_h=23.5mL$

Displace-ment Column of water 400 mm column of water

Temperature $T =258\textdegree C$

Barometric Pressure $p=758.8mmHg$

Vapour Pressure of water at $25^oC$

Generally from (Consult Appendix E.)

a)

Va-pour Pressure of water at

$25\textdegree C=23.8 torrs$

b)

Pressure of Water column

$P_w=758.8$

c) Pressure of Water column (Consult Appendix E.)

$P_w=758.8=735torr$

d)

Generally the equation for ideal gas is mathematically given by

$\frac{p_1v_1}{T_1}=\frac{p_2v_2}{T_2}$

Therefore

$V_2=\frac{p_1V_1T_2}{T_1p_2}$

$V_2=\frac{735*23.5*273}{298*760}$

$V_2=20.82mL$

5 0

3 years ago

Which statement explains why carbon dioxide (CO2) is a gas at room temperature? A. There are constant interactions between the C

Nezavi [6.7K]

Answer:

B) There are weak interactions between the CO2 molecules.

Explanation:

Carbon dioxide is composed of one carbon atom that is structured between two atoms of oxygen, they are bonded with double bond and the CO2 is symmetrical because of the arrangement of the bond between them.It is less electronegative than Oxgen, this gives Oxgen the ability to attract the electron to themselves, and there is no intermolecular existing within carbon dioxide other bands waal forces.Compounds that are gases under the condition of room temperatures, and pressure usually have have small molecules. and their molecules is usually have van der Waals forces acting between them and theses forces are weak.This allows carbon dioxide molecules to be able to move freely as a gas.

6 0

4 years ago