(HELP FAST )The model shows a molecule of silk made by a spider.
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How is geometrical symmetry related to the polarity of a molecule?
if an element,X, can form an oxide that has the formula X2O3, then element X that would most likely be located on the Periodic Table in the group as?
Which formula represents a nonpolar molecule?(1) HCl (3) NH3(2) H2O (4) CH4
Approximately how long has the Moon been geologically inactive?A. 1 billion yearsB. 3 billion yearsC. 4 billion yearsD. 4.5 billion years
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Answer:
Iridium becomes superconducting at extremely low temperatures, and its critical temperature (Tc) for superconductivity is approximately 0.11 Kelvin (K), or 0.11°C.
Explanation:
Given that the critical temperature is given to two significant digits (0.11), your answer should also have two significant digits. Therefore, the temperature at which iridium becomes superconducting is approximately 0.11°C.
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The elements that can form acidic compounds are; sulfur, arsenic, selenium, antimony, silicon.
Acidic compounds are formed by nonmetals. Metallic elements form basic compounds. This means that rubidium does not form acidic compounds since it is a metal.
Also, xenon does not form compounds because it is a noble gas. Noble gases do not react with other elements to form compounds.
However; sulfur, arsenic, selenium, antimony, silicon are nonmetals and they form acidic compounds.
Learn more: brainly.com/question/14072179
The correct answer is Sulfur, Arsenic, selenium, silicon, and antimony.
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Answer:
The substance has a density of 2.636 grams per mililiter.
Explanation:
We must remember that density (), measured in grams per mililiters, is the mass of the substance (
), measured in grams, divided by its volume (
), measured in mililiters. That is:
In addition, a kilogram equals 1000 grams and a liter equals 1000 mililiters. If we know that and
, then:
The substance has a density of 2.636 grams per mililiter.
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A rate equation can be written based on the rate constant k, concentration of reactants and half life time t1/2 of reactant if given. [A⁰] is the initial concentration of reactant A and [A]t be the final concentration.
What is rate of reaction?
Rate of a reaction is the rate of decrease in concentration of reactants or rate of increase in concentration of products. Rate of the reaction written in terms of molar concentration of reactants is called the rate law.
Consider the simplest reaction A gives B. Here the only one reactant is A. The molar concentration of A is written as [A]. The rate constant k is then,
k = [B] / [A]
If any coefficients attached with them it is written as power of the concentration term. Now, the rate of the above reaction is written as follows:
rate r = k [A]
Sometimes the initial and final concentrations of A can be considered. Where, [A⁰] is the initial concentration and [A]t be the final concentration.
The half life t1/2 is the time taken to consume half of the reactants concentration.
To find more about rate law, refer the link below:
#SPJ2
t1/2= half life
[A]= final concentration
k= rate constant
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Answer:
tendons and ligaments