All categories

3 years ago

Classify the statements pertaining to elements and compounds as either true or false

Chemistry

1 answer:

Volgvan3 years ago

3 0

Yes Compounds are generally made of two or more atom or ion or species!

TRUE

You might be interested in

How does a phospholipid behave in water?

bonufazy [111]

It is A since the tails are hydrophobic.

5 0

3 years ago

Read 2 more answers

Nitrogen monoxide, NO, reacts with hydrogen, H₂, according to the following equation.

Anvisha [2.4K]

Answer : The rate law for the overall reaction is, $Rate=k[NO]^2[H_2]$

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given the mechanism for the reaction :

Step 1 : $2NO+H_2\rightarrow N_2+H_2O_2$ (slow)

Step 2 : $H_2O_2+H_2\rightarrow 2H_2O$ (fast)

Overall reaction : $2NO+2H_2\rightarrow N_2+2H_2O$

The rate law expression for overall reaction should be in terms of $NO\text{ and }H_2$ .

As we know that the slow step is the rate determining step. So,

The slow step reaction is,

$2NO+H_2\rightarrow N_2+H_2O_2$

The expression of rate law for this reaction will be,

$Rate=k[NO]^2[H_2]$

Hence, the rate law for the overall reaction is, $Rate=k[NO]^2[H_2]$

8 0

4 years ago

Conduction, convection, and radiation are three means by which _____________ may be transferred.

Vaselesa [24]

The correct answer to this question would be heat energy

8 0

3 years ago

Read 2 more answers

Given that naphthalene is insoluble in water and sublimes easily upon heating, describe two different methods by which you could

Sunny_sXe [5.5K]

<span>Based on solubilities you can separate naphthalene and NaCl by adding the mixture to a volume of water. NaCl is highly soluble in water, so it will dissolve completely, while the insoluble naphthalen will remain solid. Next your filter the solution, washing the solid with pure water to eliminate all the NaCl from it. The NaCl will remain is solution, and you can obtain it by evaporating the water. The other method to separate naphthalene and NaCl is based on sublimation property of naphthalene: you can permit that naphthalene sublimes freely or use vacuum to accelerate the process. You use a closed vessel to catch all the gas, while the NaCl will remain solid.</span>

3 0

4 years ago

Which particles give the nucleus its positive charge?

Mnenie [13.5K]

Answer:

protons only

Explanation:

proton is present in the nucleus of atom as sub atomic particle ..

proton has + charge in the it's top as p+..

6 0

3 years ago