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3 years ago

What are the Oxidation numbers for H2AsO4-

Chemistry

2 answers:

HACTEHA [7]3 years ago

8 0

i cant understand your question define briefly

GREYUIT [131]3 years ago

3 0

Answer:

What is the oxidation number of arsenic in H2AsO4 -2?

+1, +2, +3, +4, or +5?

ps. all the numbers in the problem are subscripts,not coefficiants

Explanation:

hope it helps

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Ayuda es urgente!! el tronco de madera y las cenizas pesan lo mismo ?

skad [1K]

Answer:

Spanish

Explanation:

help is urgent the log of wood and the same

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2 years ago

Aqueous solutions of isopropyl alcohol are commonly sold as rubbing alcohol. The boiling point of isopropyl alcohol is 82.4 °C.

Monica [59]

Answer:

This is due to more hydrogen bonding in ethylene glycol than it is in isopropyl alcohol

Explanation:

The boiling point of isopropyl alcohol is 82.4 °C it contains only a single OH group, hence intermolecular hydrogen bonding is solely responsible for it's boiling point, whereas Ethylene glycol (CH2OHCH2OH) contains 2-OH group and both intermolecular and intramolecular hydrogen bonding are responsible for the higher boiling point of ethylene glycol at 198 °C.

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2 years ago

plz, help me Lisa’s doctor tells her that she needs to eat more foods that contain calcium to maintain her bone health. What cou

andriy [413]

Answer:

Deficiency of calcium which means that her body will take calcium from her bones which results in weakening of bones. (osteoporosis)

Explanation:

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2 years ago

A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f

a_sh-v [17]

Answer:

$m_{H_2O}=39.0g$

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

$\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})$

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

$m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g$

Best regards.

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3 years ago

A ball was kicked by a player, the ball was stationary, then it gains a velocity of 5 m/s North. Did the ball accelerate or no?

Tomtit [17]

Answer:

yes

Explanation:

it started moving North 5 m/s

7 0

2 years ago