A cookie made with a high proportion of eggs, sugar, and liquid, a low proportion of fat and a strong flour will be very tender and soft.
The high amount of eggs and sugar provides moisture and tenderness to the cookie, while the low proportion of fat prevents it from becoming too greasy or heavy. The strong flour provides structure and helps the cookie hold its shape while baking. This type of cookie is often referred to as a "cake-like" cookie and is popular for its light and fluffy texture. It's important to note that the ratio of ingredients plays a critical role in determining the final texture and taste of the cookie.
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a small steel bead (d = 0.1 mm, rhos = 7900 kg m-3) is released in a large container of fluid. when the gravitational and drag forces on the bead balance, the drag force can be expressed as:
The drag force acting on a small steel bead in a fluid can be determined when it reaches a state of equilibrium with the gravitational force.
When a small steel bead is released in a fluid, it experiences both gravitational force and drag force. The drag force is the resistance encountered by the bead as it moves through the fluid. At equilibrium, the gravitational force and drag force balance each other out, resulting in a constant velocity for the bead.
The drag force can be expressed using the drag equation, which relates the drag force to the fluid properties, the shape of the object, and its velocity. The drag force on the bead can be determined using the equation:
Fd = 0.5 * Cd * A * ρ * v^2
where Fd is the drag force, Cd is the drag coefficient (which depends on the shape of the object and the fluid properties), A is the cross-sectional area of the bead, ρ is the density of the fluid, and v is the velocity of the bead.
In this case, the drag force and gravitational force are equal when the bead reaches a state of equilibrium. By setting the drag force equal to the gravitational force (mg, where m is the mass of the bead and g is the acceleration due to gravity), the velocity at equilibrium can be determined. This allows for the calculation of the drag force acting on the small steel bead in the fluid.
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an acid with a pka of 8.0 is present in a solution with a ph of 6.0. what is the ratio of base to acid?
the ratio of base to acid in the solution is 0.01. The ratio of base to acid can be determined using the Henderson-Hasselbalch equation: pH = pKa + log([base]/[acid]).
Rearranging the equation, we get [base]/[acid] = 10^(pH-pKa). Substituting the given values, we get [base]/[acid] = 10^(6-8) = 0.01. Therefore, the ratio of base to acid is 0.01 or 1:100. To find the ratio of base to acid in a solution, you can use the Henderson-Hasselbalch equation: pH = pKa + log ([base]/[acid]). In this case, the pKa is 8.0 and the pH is 6.0. Plugging these values into the equation, we get:
6.0 = 8.0 + log ([base]/[acid])
Now, we need to solve for the ratio [base]/[acid]. First, subtract 8.0 from both sides:
-2.0 = log ([base]/[acid])
Next, use the inverse logarithm (10^x) to remove the log:
10^(-2.0) = [base]/[acid]
This results in:
0.01 = [base]/[acid]
Thus, the ratio of base to acid in the solution is 0.01.
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How many grams of beryllium chloride (BeCl2) are needed to make 125 g of a 22.4% solution?
Answer: 28 grams
Explanation:
calculation of the mass :
x grams = (22.4/100) * 125 grams
to solve for x otherwise known as how many grams we need :
x grams = (22.4/100) * 125 grams
x grams = 0.224 * 125 grams
x grams = 28 grams
5. In one method of manufacturing nitric acid, ammonia is oxidized to nitrogen monoxide and water:
How many grams of water will be produced in a reaction of 2800. L. of nitrogen trihydride?
4NH₂(g) + 50.(g) → 4NO(g) + 6H₂O)
03/16/2023 12:03
Identify the properly written and balanced equation for the precipitation reaction between ammonium sulfide and cobalt(II) chloride. please choose the correct answer from the following choices, and then select the submit answer button. answer choices
A. (NH4)2S+2 CoCl2 → CoS + NH4CI
B. (NH4)2S+ CoCl → COS + 2 NH4CI
C. NH4S + CoCl2 → CoS2 + 2 NH4CI
D. NHS+COCICOS + NH4Cl
Your answer: A. (NH4)2S + 2 CoCl2 → CoS + 2 NH4Cl. This equation shows that when ammonium sulfide is added to cobalt(II) chloride, a precipitation reaction occurs, resulting in the formation of solid cobalt sulfide and aqueous ammonium chloride.
The properly written and balanced equation for the precipitation reaction between ammonium sulfide and cobalt(II) chloride is A. (NH4)2S+2 CoCl2 → CoS + 2 NH4CI. This equation shows that when ammonium sulfide is added to cobalt(II) chloride, a precipitation reaction occurs, resulting in the formation of solid cobalt sulfide and aqueous ammonium chloride. This equation is balanced because there are an equal number of atoms on both sides of the equation. It is important to use a balanced equation in chemistry to ensure that the reactants and products are in the correct proportions and to accurately calculate stoichiometric ratios.
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