A 000445 mol sample of a weak acid hy is dissolved in
A 0.00445 mol sample of a weak acid, HY, is dissolved in enough water to form 0.0976 L of solution. If the pH of the solution is 4.02, what is the Ka of HY? Use E notation with 3 significant figures.
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A hybrid communication system uses both AMSC and FM. The information signal a(t) is first AMSC modulated with the subcarrier frequency 1000 Hz. Then it passes through an FM modulator with the carrier frequency 10Mhz.
Experimentally observed facts have led to the establishment of rules used to predict the solubility of common compounds in water. The rules can be stated as follows: Compounds that contain , , , and are always soluble with no particular exceptions
The line will operate for 480 minutes per day. a. What are the maximum and minimum cycle times? b. What output rate will be achieved by each of those cycle times?
A 1000 turns wire are tighly wound on a toroid with a rectangular cross section, the heigh of toroid is 0.5 cm . The inner and outer radii of 2 cm and 3cm respectively. The current in the wire I=100 mA, Ur = 4000. N= 1000, Find H,B,phi and inducta
The cylindrical coaxial cable with the cross section shown below, has inner and outer radii of 5mm and 15mm respectively. The dielectric parameters are; er=2, signma=5*10^(-10) S/m and Ur=1.
Stage one-the analysis that includes systematic identification and consideration of the key aspects of the firm's environment and stage two-the synthesis of the key aspects into an understanding of the strategic opportunities and threats
The electrode of a pH meter is placed in a sample of urine and a reading of 7.9 is obtained. Is the sample acidic basic, or neutral? What is the concentration of H3O+ in the urine sample?
you decide to make the font size large enough so that a person with 20/40 vision will be able to read the letters displayed on the screen with your slides with 95% accuracy from 20 m away. What is the minimum width of the displayed letter strokes
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Then, consider how tools like brain scans and other technology can show what is happening in the brain during that process.
how constructionism influences your racial and ethnic identities. The concept of social class is also based on or influenced by constructionism
Describe the concerns held by both adoptive parents and adopted children in transracial families. What other concerns would you add that were not discussed
Pick one type of social media and discuss how this media influences society. Discuss the history of the media type, select a platform
Explain how media has affected elections and/or geopolitics from either the United States or anywhere around the world.
The verdict in Brown vs Board of Education of Topeka Kansas was the beginning of the Civil Right movement. What was Brown vs Board of Education?
Perform research on the Bill of Rights and the restrictions on service members participating in American political campaigns.