Questions by Dave Hein

Questions by Dave Hein

A fictitious element X is composed of 10.0 percent at 24.3 amu, 20.0 percent at 25 amu, and 70.0 percent at 25.5 amu. Calculate the average atomic mass of element X.

asked Dec 27, 2024

1 answer

3 votes

169k views

Which equation represents a line which is perpendicular to the line y= -1/2x - 7? a. 2x + y = 2 c. x - 2y = 6 b.y - 2x = 4 d. x + 2y = -8 (GIVING 100 POINTS!)

asked Dec 4, 2024

2 answers

1 vote

50.7k views

Biostat tests - As disease prevalence increases, _____ increases. As disease prevalence decreases, ____ increases.

asked Aug 21, 2024

1 answer

1 vote

23.0k views

IFR Fl290 to FL600 cruising altitudes non RVSM A) 120 knots B) 180 knots C) 250 knots D) 320 knots

asked Aug 20, 2024

1 answer

2 votes

130k views

China was unique in the ancient world in the extent to which a. slave holding defined the society. b. its social organization was shaped by the actions of the state. c. the caste system defined its social

asked Apr 27, 2024

1 answer

4 votes

139k views

In what historical situation did Conrad of Megenberg write his book? The Black Death pandemic in the 14th century. The Renaissance period in Europe. The Industrial Revolution in the 18th century. The Age

asked Mar 16, 2024

1 answer

3 votes

92.0k views

Which of the following best describes "sourcing?" A Determining who wrote a document as well as the circumstances of its creation. B. Considering details across multiple sources to determine points of

asked Jan 1, 2024

1 answer

4 votes

223k views

What percent of college students graduate with honors.

asked Aug 27, 2023

2 answers

18 votes

57.1k views

An electric current heats a 250 gram sample of copper wire from 20°C to 45°C. How much heat was generated by the electric current? The specific heat capacity of copper is 0.093 cal/g•°C.

asked Jul 27, 2023

1 answer

3 votes

128k views

An outcome of a correlation study attendance and grade point average could potentially conclude all the fallow except... A: there is a relationship between the number of days a student comes to school

asked Apr 27, 2023

1 answer

0 votes

119k views

Latin American independence movements were inspired by what?

asked Dec 11, 2022

1 answer

4 votes

58.7k views

The device which superimposes information onto a high frequency signal for transmission is called: a modulator a demodulator the carrier the intelligence

asked Nov 28, 2022

1 answer

3 votes

108k views

What multiplication is suggested by each of the models below? (a) ☆☆⭐️ ⭐️⭐️⭐️ ⭐️⭐️⭐️ ⭐️⭐️⭐️ ⭐️⭐️⭐️

asked Oct 14, 2022

2 answers

4 votes

40.6k views

If a trapezoid has an area of 21 cm and a height of 6cm, what are its bases?

asked Aug 24, 2022

1 answer

8 votes

186k views

What volume is occupied by 18.4 g oxygen at 28.0°C and a pressure of 0.998 torr? (round to sig figs)

asked Jul 9, 2022

1 answer

1 vote

131k views

Drag the tiles to the correct boxes to complete the pairs Match each cause with the correct effect during the CMl War. bonded the marutacturing A see in the North caused serious food shortages stopped

asked Jul 5, 2022

1 answer

15 votes

5.1k views

Paano tinitiyak ng halalan sa pilipinas ang pagiging demokratiko ng bansa?

asked Apr 26, 2022

1 answer

1 vote

43.3k views

1. Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s,

asked Mar 5, 2022

1 answer

15 votes

180k views

In general, MOSFET'S:___________. A) are mostly used in switching circuits B) can be fabricated in much higher densities than BJT'S C) produce simpler circuits than BJTS D) all of the above

asked Dec 26, 2021

1 answer

3 votes

22.4k views

Which equation represents y = -x2 - 2x + 3 in vertex form?

asked Dec 25, 2021

1 answer

1 vote

72.8k views

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