05Dec
Among the alkali metals, the tendency to react with other substances. A. does not vary among the members of the group. . B. increases from top to bottom within the group. . C. varies in an unpredictable way within the group. . D. decreases from top to bottom within the group.
Eckster50
Chemistry
2 0
05Dec
If you were asked to convert 3.5 moles of aluminum to grams, which of the following should you use for the conversion? . Select one:. a. fraction: 6.022 times 10 superscript 23 atoms Al over one mol Al atoms. b. fraction: 26.981 g Al over one mol Al. c. fraction: 13.0 g Al over one mol Al. d. fraction: 6.022 times 10 superscript 23 atoms Al over 26.981 mol Al atoms.
arjun007
Chemistry
1 0
05Dec
HELP PLS!!!. 2C4H10(g)+13O2(g)→10H2O(g)+8CO2(g). . Calculate the mass of water produced when 7.36g of butane reacts with excess oxygen.. Express your answer to three significant figures and include the appropriate units.. Calculate the mass of butane needed to produce 72.7g of carbon dioxide.. Express your answer to three significant figures and include the appropriate units.. how do you do it?
ashleyrector311
Chemistry
1 0
05Dec
1. How does Earth science overlap with life science? (1 point). Earth science involves the study of Earth’s rocks.. Earth science involves the study of systems that may include living organisms.. Earth science involves the study of the composition of matter.. Earth science does not overlap with life science.. 2. What happens when the data in an investigation does not support the original hypothesis? (1 point). The scientist gives up and starts an investigation on a new topic.. The data must be incorrect and is thrown out.. The hypothesis is revised.. The data is altered so that it suppor
Sierrarose
Geography
1 0
05Dec
lagos mas importantes de Asia
bellamoore1021
Spanish
1 0
05Dec
A newly discovered element, X, has two naturally occurring isotopes. 93.5 percent of the sample is an isotope with a mass of 268.9 u, and 6.5 percent of the sample is an isotope with a mass of 269.9 u. What is the weighted average atomic mass for this element?. . 268.5 u . . 269.0 u . . 269.4 u . . 269.8 u.
cookiemonsta319
Chemistry
2 0
05Dec
The Commissariat established by Fredrick William In Prussia became . A. the overseer of the army. B. the agency of civil government. C.both a military and civil agency. D. a court to persecute heretics. . The Royal court at Versailles was NOT used by Louis XIV. . A. as his personal household. B. as the first university. C. as the center for state offices.. D. to have powerful subjects visit to seek favors
FlorenciaDagner342
History
1 0
05Dec
how to prevent acne forever
BabyBear
Health
1 0
05Dec
Convert 3.0x10^10 cm/s to ft/s
akgraham
Mathematics
1 0
05Dec
A local store owner pays her employees time and a half for overtime. That means for every hour an employee works more than 40 hours per week, the store will pay 1.5 times the regular hourly wage of $8.50. Write a function o(x) that defines the hourly pay for overtime hours worked.
RonnyLeckbee353
Mathematics
1 0
05Dec
The merit of a new scientific theory is judged by the scientific community based on. . how well-known the theory is within the general public.. . the popularity of the theory within the general public.. . how well existing scientific data are explained by the new theory.. . the popularity of the scientist who proposes the theory..
tbone11
Biology
2 0
05Dec
1. The idea that organisms shared a conserved, core processes can be used as evidence to explain that all life shares a common origin. Which of the following describes evidence that supports this claim?. a-all organisms have DNA and undergo transcription and translation. b-all organisms reproduce by carrying out sexual reproduction. c-cellular respiration take place in the cells mitochondria in all organisms . d-DNA replication and reapir takes place in the cells nucleus. . 2. which of the following represents one of the steps through which simple cells are hypothesized to have been produced?
hannavitoriagal
Biology
2 0
05Dec
As each electron is removed, one at a time, from an atom of aluminum, more ionization energy is required. Between which two successive ionization energies would you expect the greatest difference (largest change in value)? Explain your answer in terms of attraction, repulsion, and electron arrangement.
ElfriedeHemry
Chemistry
2 0
05Dec
avarse Ponerse Maquillarse Bañarse Afeitarse Mirarse Peinarse Ducharse Vestirse Cepillarse Secarse Despertarse Divertirse Llamarse Quitarse Pintarse Dormirse Acostarse 1. ¿A qué hora te despiertas por la mañana? 2. ¿Dónde te duermes por la noche? 3. ¿Te lavas el pelo todos los días? 4. ¿A qué hora te acuestas por la noche? 5. ¿Te duchas por la mañana o por la noche? 6. ¿Cuántas veces te cepillas los dientes durante el día? 7. ¿Dónde te pones la ropa por la noche?
Danelle307
Spanish
1 0
05Dec
What happens to reactants molecules when forming product molecules?
JosefaMcclusky
Chemistry
1 0
05Dec
How will the speed of a sound wave change if the temperature of the medium rises?. . Select one of the options below as your answer:. A.. The speed will increase.. B.. The speed will decrease.. . C.. The speed will not change.. . D.. The speed will initially increase and then return to its earlier value.
Swinger272
Physics
2 0
05Dec
Why did Spain colonize Florida and the Rio Grande valley?. . A. Native Americans in that region wanted to trade with the Spanish.. . B. Spain wanted to protect its colony in Mexico from other Europeans.. . C. Missionaries insisted on spreading Christianity across the continent.. . D. The Spanish found silver and gold mines there.. .
khall
History
1 0
05Dec
Which statement about third-person limited point of view is false? A. The narrator is not a character. B. The narrator uses pronouns like he, she, they, and them. C. The narrator gives the reader access to all the characters’ thoughts. D. The narrator gives the reader access to one character’s thoughts.
amondragon
English
1 0
05Dec
Which of the following is not a true statement about solving two-step equations?. A.. Two-step equations require the addition property of equality to solve.. B.. Two-step equations require the multiplication property of equality to solve.. C.. Two-step equations require all numbers to be whole numbers in order to solve.. D.. Two-step equations can be solved even with coefficients that are fractions.
bbcatter
Mathematics
1 0
05Dec
Determine the standard form of the equation of the line that passes through (6,0) and (2,-7).. . Determine the standard form of the equation of the line that passes through (-5,0) and (0,-9). . Determine the standard form of the equation of the line that passes through (-7,8) and (0,2). . Determine the standard form of the equation of the line that passes through (0,5) and (4,0)
jreiling
Mathematics
1 0
05Dec
What does it mean when scientists say that living organisms share a universal genetic code? When scientists say that living organisms share a universal genetic code, hypothetically, they quite literally mean it. All living organisms share a common ancestry, and an originator cell that contains the genetic coding and material that has been passed down throughout the organisms. 2. How does a universal genetic code relate to the hypotheses about the origin of life on Earth? A universal genetic code relates to the hypotheses about the origin of life on Earth, simply by its name. The origin of life on Earth is thought to be from a single organism, which branched out to create everything there is today. A universal genetic code takes the similarities in organisms and compares them to suggest that each organism came from a single organism from early Earth. Of course, this is just a theory, but can support the documentation revolving around the origin of life. 3. How are self-replicating molecules, such as RNA molecules in the “RNA World” hypothesis, essential to the most popular hypotheses about the origin of life on Earth? Self-replicating molecules such as RNA molecules in the “RNA World” hypothesis are essential to the most popular hypotheses about the origin of life on Earth because of the functions they’re believed to carry out. RNA molecules are believed to self-catalyze, and by doing so this opens the possibility that early RNA molecules could self-replicate without the aid of other organisms. If this was such a case—if RNA molecules could replicate and create more RNA molecules—this supports why all organisms share the same genetic code, and thus, aids in the RNA hypothesis. 4. How might similarities and differences in genetic codes, or the proteins built as a result of these codes, be used to determine how closely related different species are? Similarities or differences in genetic codes, or the proteins built by these codes, are set in their DNA sequences. The more similar two genetic codes are, say humans and chimpanzees, the more likely they are to have a common ancestor back from early Earth, as they share identical coding order. 5. Based on the amino acid sequence data for the Cytochrome-C protein, chimpanzees and humans share an identical coding sequence. What other species identified on the chart has a coding sequence that is most closely related to the humans and chimpanzees and most distantly related? Explain your answer. Based on the amino acid sequence data for the Cytochrome-C protein, chimpanzees and humans share an identical coding sequence. Another species identified on the chart that is similar to the two would be the Rhesus Monkey, with is completely identical with 0 differences to the humans/chimpanzees.
GildaChristopherse
Biology
1 0