All categories

3 years ago

Which of the following foods is likely lowest in nutritional value and highest in fat?

2 answers:

8 0

If i were to guess personally, i'd say the tomato soup, because of the salt content. But i'd look up all of the answers and see personally before answering.It's either that one, or cream cheese, because cheese is very fatty.

bogdanovich [222]3 years ago

6 0

Tomato Suop Creamchsee almonds and pears

You might be interested in

Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s

bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

The equation used to calculate half life for first order kinetics:

$k=\frac{0.693}{t_{1/2}}$

where,

$t_{1/2}$ = half-life of the reaction = 9.0 s

k = rate constant = ?

Putting values in above equation, we get:

$k=\frac{0.693}{9}=0.077s^{-1}$

Rate law expression for first order kinetics is given by the equation:

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$ ......(1)

where,

k = rate constant = $0.077s^{-1}$

t = time taken for decay process = 50.7 sec

$[A_o]$ = initial amount of the reactant = ?

[A] = amount left after decay process = 0.0741 M

Putting values in equation 1, we get:

$0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}$

$[A_o]=3.67M$

Now, calculating the time taken by using equation 1:

$[A]=0.0055M$

$k=0.077s^{-1}$

$[A_o]=3.67M$

Putting values in equation 1, we get:

$0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s$

Hence, the time taken by the reaction is 84.5 seconds

6 0

3 years ago

Your apple juice has a molarity of 3.4 M and a volume of 0.895 litres. What does a student have to do to decrease the molarity t

Jlenok [28]

Answer:

4.285 L of water must be added.

Explanation:

Hello there!

In this case, for this dilution-like problems, we need to figure out the final volume of the resulting solution so that we would be able to obtain the correct volume of diluent (water) to be added. In such a way, we can obtain the final volume, V2, as shown below:

$M_1V_1=M_2V_2\\\\V_2=\frac{M_1V_1}{M_2}$

Thus, by plugging in the initial molarity, initial volume and final molarity (0.587 M) we obtain:

$V_2=\frac{3.4M*0.895 L}{0.587M}\\\\V_2=5.18L$

It means we need to add:

$V_{H_2O} ^{added}=5.18L-0.895L=4.285L$

Of diluent water.

Regards!

6 0

3 years ago

Oxygen and hydrogen are most likely to form what type of bond?

tekilochka [14]

Oxygen and Hydrogen would most likely form a covalent bond that is polar, or a polar covalent bond. Due to the electronegativity difference between the 2 elements, unequal sharing of the valence electrons will occur, electrons being in closer proximity to Oxygen and farther away from Hydrogen. Resulting in the characteristic partial positive and negative charges to appear for the respective elements.

3 0

3 years ago

Read 2 more answers

Need help with question 1.) I got something wrong but i don’t know hurry ASAP

lana [24]

Vinegar is an heterogeneous mixture

Explanation:

3 0

3 years ago

Choose the solvent below that would show the greatest freezing point lowering when used to make a 0.20 m nonelectrolyte solution

tatiyna

Answer : Carbon tetrachloride, $k_f=29.9^oC/m$ will show the greatest freezing point lowering.

Explanation :

For non-electrolyte solution, the formula used for lowering in freezing point is,

$\Delta T_f=k_f\times m$

where,

$\Delta T_f$ = lowering in freezing point

$k_f$ = molal depression constant

m = molality

As per question, the molality is same for all the non-electrolyte solution. So, the lowering in freezing point is depend on the $k_f$ only.

That means the higher the value of $k_f$ , the higher will be the freezing point lowering.

From the given non-electrolyte solutions, the value of $k_f$ of carbon tetrachloride is higher than the other solutions.

Therefore, Carbon tetrachloride, $k_f=29.9^oC/m$ will show the greatest freezing point lowering.

4 0

3 years ago