All categories

3 years ago

Just wondering...

Chemistry

2 answers:

Mrac [35]3 years ago

7 0

The fur will become darker just from elimination of unlikely answers

True [87]3 years ago

4 0

I think it’s the last answer.

You might be interested in

Why do atoms fond bonds

Setler [38]

They bond because they want to make their outer electron shells more stable

Hope this helps

Have a happy holidays

3 0

3 years ago

How much heat must be transferred to 100.0g of water to change its temperature by 35° C?

nekit [7.7K]

Answer:

14700J

Explanation:

From the question given, the following were obtained:

M = 100g

ΔT = 35° C

C = 4.2J/g °C

Q=?

The heat transferred can calculated for by using the following equation

Q = MCΔT

Q = 100 x 4.2 x 35

Q= 14700J

7 0

3 years ago

Calculate the acid dissociation constant of a weak monoprotic acid if a 0.5M solution of this acid gives a hydrogen-ion concentr

RUDIKE [14]

Let the acid be HA.
The chemical formula for this acid will be the following:

$HA \rightleftharpoons H^{+}+A^{-}$

The formula for the acid dissociation constant will be the following:

 $K_a= \dfrac{[H^+][A^-]}{[HA]}$

We know [H+]=0.0001 (it's given).
However, we must find [A-] and [HA] in order to solve for the constant.

We find that [A-]=[H+] by using a electroneutrality equation.
Also, we can create a concentration equation to find [HA].

 $0.5M=[A^-]+[HA]$
$[HA]=0.5M-[A^-]$

Now, we can find the acid dissociation constant.

 $K_a= \dfrac{[H^+][A^-]}{0.5M-[A^-]}$

$= \dfrac{0.0001*0.0001}{0.5-0.0001} = 2.0*10^{-8}$

4 0

3 years ago

#1: Karen measures the volume of a gas at 200 K and 100 kPa. To correct her measurement to standard temperature and pressure (ST

Nitella [24]

To correct her measurement to standard temperature and pressure (STP), she must make a volume correction based on a higher temperature of 273 K. The answer is letter B. This is in order to correct the temperature and pressure because correcting the volume will indicate that the temperature and pressure will result to the opposite result of the volume. This is because volume is indirectly proportional with pressure and temperature.

3 0

4 years ago

U/d21/ms/quizzing/user/attempt/quiz_start_frame_auto.d2l?u=2332447&isprv=&dic=0&q=2942919do

Masteriza [31]

Answer:

876 grams

Explanation:

Convert specific gravity to density, using water density 1.0 g/ml

d = e.g x 1.0 g/ml = 1.168 g/ml

d = m/v (mass/volume)

m = dxv = 1.168 g/ml x 750 ml = 876 grams

4 0

3 years ago