Weight is measured using an instrument called a

Write reaction equations to explain how your acetic acid-acetate buffer reacts with an acid and reacts with a base.

guajiro [1.7K]

acetic acid = CH3COOH(aq) , acetate = CH3COO-(aq) and proton = H+(aq)

so...

CH3COOH(aq) <-> CH3COO-(aq) + H+(aq)

this is the dissociation of acid, therefore, it will yield H+ ions in solution, which are ACIDIC

then... for the acetate buffer, recall that

CH3COO-(aq) is a weak conjugate base, so, it can accept H+ if in excess

so

H+(aq) + CH3COO-(aq) <--> CH3COOH(aq)

therefore, addition of excess H+, will form CH3COOH slowly.. i.e. th epH will not increase drstically

Addition of OH- ins, from a strong base:

OH-(aq) + H+(aq) <--> H2O(l)

then, OH- is apdily converted to H2O, which is not basic, so pH won't change drastically.

6 0

4 years ago

HELP!!!!!!!!

balu736 [363]

The<span> pros of using GMO are that they result in higher yields than natural food crops hence able to feed a growing human population on earth. They are also able to withstand crop diseases and pests hence improved yields. </span>

The cons of transgenic plants contribute to antibiotic resistance especially due to the use of antibiotic resistance genes in recombination genes. Another is the environmental impact. GMO may result in uncontrolled gene transfer to natural crops in the environment hence created challenges such as super-weeds.

5 0

3 years ago

Americium-241 is an alpha emitter used in household smoke detectors and K-40 is a positron emitter used to date rock samples. Th

VMariaS [17]

Answer:

Np-237, Ar-40.

Explanation:

Alpha particle is positively charged particle having a mass of 4 unit. Hence,when alpha is removed from any isotope it produces a element having mass 4 units less than original isotope that was before emission. Americium 241 isotopes used in the smoke detector which emit an alpha particle to produce neptunium-237.

Potassium-40 emits positron which is having negative charge to lower one proton and increase one neutron number in the particle and in such way it will produce $^{40}Ar_{18}$ not $^{40}Ca_{20}$

4 0

3 years ago

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WILL GIVE BRAINLY

cestrela7 [59]

KCIO3 → KCI + O2

First you have to count all the atoms of each element in both sides of the reaction, in this case:
Left side: there is one K atom, one Cl atom and 3 O atoms
Right side: there is one K atom, one Cl atom and 2 O atoms

K and Cl are balanced but O isn't
To balance O you can add a coefficient to O2 in the right side of the equation like this:

KCIO3 → KCI +3 O2

Now you have 6 oxygen atoms in the right side but only 3 in the left side, so you can add a coefficient to KClO3:

2KCIO3 → KCI +3 O2

And finally, Balance K and Cl again by adding a 2 as a coefficient for KCl

2KCIO3 → 2KCI +3 O2

Now both sides have the same amount of atoms of each element (2 K atoms, 2 Cl atoms and 6 O atoms)

8 0

4 years ago

Select all that apply. Select all the items that are public goods or services.

Gekata [30.6K]

All of them are technically a public good or a service because for a public goods it would be all and service it would be all so.... yah

4 0

4 years ago

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