The density of vldl is 1.152 mg/l
Calculation:
Given mass = 0.288 mg
Given volume = 0.252 ml
From the formula
Density = Mass/ volume
= 0.288 / 0.252
= 1.152 mg/l
The density of a substance (volumetric mass density or specific mass) is its mass per unit volume. The most common symbol for density is (the lower case Greek letter rho), but the Latin letter D can also be used. Density defined mathematically
p = mass / volume
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Answer:
THE ANSWER IS C OK THANKS FOR THE ASK
Explanation:
<span>pH = pKa + log([A^-]/[HA])
[A^-] = [KF] = 0.43 M, [HA] = [HF] = 0.20 M
pKa = -logKa = -log(6.8x10^-4) = 3.17
pH = 3.17+ log(0.43 / 0.20) = 3.50
You can determine the [H3O^+] by using the equation for pH
pH = -log[H3O^+]
[H3O^+] = 10^-pH = 10^-3.50 = 3.16x10^-4 M</span>
Answer:
A. The reaction will proceed forward forming more CH4
B. The reaction will proceed forward forming more CH4
C. Since the reaction is exothermic, raising the temperature will cause the reaction to proceed backward, thus forming C and H2.
D. Lowering the volume makes the gas particles to be more close together thereby enhancing their collisions leading to reaction. Therefore the reaction will proceed forward forming more CH4
E. Catalyst only reduce the activation energy so the reaction can proceed faster. The reaction will proceed forward forming.
F. The following will favour CH4 at equilibrium
i. Catalyst to the reaction mixture,
ii. Both adding more H2 to the reaction mixture and lowering the volume of the reaction mixture
iii. Adding more C to the reaction mixture.
Answer:
There are three isotopes of the element oxygen (O): Oxygen 16, 17, and 18. Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. ... Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
Chemical elements are found in different versions, called isotopes. Isotopes are elements that contain the same amount of protons, but differ in the number of neutrons in their nuclei. For example, there are three isotopes of the element oxygen (O): Oxygen 16, 17, and 18. Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. An isotope number is a shorthand representation of its mass. Because protons and neutrons are roughly equal in mass, an isotope’s number is equal to the sum of its protons and neutrons. Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
There are two main types of isotopes that geoscientists use to interpret the ancient Earth: stable and unstable isotopes.
Explanation:
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