How much will 3 moles of Mg(OH)2 weigh?

Can someone please help mee finish this?

zvonat [6]

Answer:

1.Physical. People measure water by themselves.

2.Physical. People chop wood.

Explanation:

(this is all I can answer for you. you have to explain it by yourself tho.)

I dont know if I'm correct so you should double check.

4 0

4 years ago

A client who weighs 70 kg is receiving a solution of 0.9% sodium chloride (normal saline) 500 ml with dopamine 800 mg at 5 ml/ho

nordsb [41]

The mcg/kg/minute the client is receiving is 1.904 mcg/kg/min whose weight is 70 kg.

1 milligram (mg) = 1000 micrograms (mcg) or 0.001 grams (g) 1 g = 1000 mg 1 kilogram (kg) = 1000 g 1 kg = 2.2 pound (lb) 1 liter (L) = 1000 milliliters (mL)

The number of mcg/kg/minute = flow rate × concentration ÷ mass of client

Flow rate = 12 ml/hour = 12 ml/hour × 1 hr/60 min = 0.2 ml/min

Concentration = mass of dopamine/volume

where

mass of dopamine = 800 mg and

volume = 500 ml

Concentration =800 mg/500 ml

= 1.6 mg/ml

= 1.6 mg/ml × 1000 mcg/mg

= 1600 mcg/ml

mass of client = 70 kg

Calculating mcg/kg/minute

So, substituting the variables into the equation, we have

mcg/kg/minute = flow rate × concentration ÷ mass of client

mcg/kg/minute = 0.08 ml/min × 1600 mcg/ml ÷ 70 kg

mcg/kg/minute = 320 mcg/min ÷ 70 kg

mcg/kg/minute = 1.904 mcg/kg/min

Thus, the mcg/kg/minute the client is receiving is 1.904 mcg/kg/min

Learn more about mcg/kg/minute here:

brainly.com/question/4253005

#SPJ1

7 0

2 years ago

Using your answer from the previous question and any color changes in the video, which part of the salt visually responds to the

Drupady [299]

Answer:

This question is incomplete

Explanation:

This question is incomplete however, the answer is straight forward.

A salt is a compound formed as a result of the neutralization reaction between an acid and a base. The salt formed comprises of the metal from the base and the non-metal from the acid, as shown below

HCl + NaOH ⇒ NaCl + H₂O

Hence, we can say a salt has a metallic and non-metallic component.

Flame test experiment is generally used to detect the presence of metal ions by "releasing" several metallic colour change. Thus, the part of the salt that must have visually responded to the flame test is the metallic component.

4 0

3 years ago

When the molecules in the air become less dense (as in the process of hearing), ______ has occurred.

Dahasolnce [82]

Explanation:

Whenever there occurs a decrease in the density of a substance then this is known as rarefaction.

For example, when particles of a gas become more dispersed or spread out then it means they have gained more kinetic energy. As a result, there will occur a decrease in mass of the gas and increase in volume of the gas.

As density is mass divided by volume. Hence, decrease in mass will also lead to a decrease in density of the gas.

Therefore, we can conclude that when the molecules in the air become less dense (as in the process of hearing), rarefaction has occurred.

4 0

4 years ago

A molecule that closely resembles the shape of a substrate and therefore also fits into the active site of an enzyme might serve

Fynjy0 [20]

Answer: inhibitor

Explanation:

Enzymes have a shape that closely resemble that of the substrate hence they fit into the substrate by lock and key mechanism. The activity of the enzyme hinges on its similarity with the substrate in shape. Any other molecule similar to the shape of the substrate can fit into the substrate thereby preventing the enzyme from locking with the substrate. Such substances are called inhibitors. They decrease the activity of an enzyme.

6 0

3 years ago