Archive day

December 16, 2025

2,706 public questions were asked on this day.

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In everyday life, changing the speed of a moving object will change all but which value?(1 point) Responses momentum momentum acceleration acceleration mass mass velocity velocity Skip to navigation
Asked by Mason 1 answer
In what group and period does Barium (Ba) belong? (1 point) Responses Group 2, Period 6 Group 2, Period 6 Group 56, Period 137 Group 56, Period 137 Group 137, Period 56 Group 137, Period 56 Group 6, Period 2 Group 6, Per...
Asked by Nico 1 answer
Question How can the momentum of a moving object be found?(1 point) Responses by dividing its change in distance traveled by the time it travels by dividing its change in distance traveled by the time it travels by multi...
Asked by Mason 1 answer
Match each element to its correct group. (2 points) Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Responses can be...
Asked by Nico 1 answer
Which of the followin applies to Lewis dot structures ? Select all that apply. a the number of dots represent the number of valence electrons or their A-group number. b The number of dots represent the number of valence...
Asked by tyrone 1 answer
Match each arrow with the correct change of state. (2 points) Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Respon...
Asked by Nico 1 answer
A city's water company charges a fee of $30 a month in addition to $0.3 per every gallon used. Using the function c = 0.35x + 30, where c is the total cost per month for water services and x is gallons used. Which of the...
Asked by Nissan GT-R R35 Nismo 1 answer
For each description, decide if it is describing an acid or a base.(2 points) Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the...
Asked by Nico 1 answer
Atoms and molecules are constantly in motion. The more kinetic energy atoms or molecules have, the faster they move about. In which state of matter do the atoms and molecules have the least kinetic energy?(1 point) Respo...
Asked by Nico 1 answer
45g KCl at 60°C Press enter key to drop response here. 70g of CaCl2 at 10°C Press enter key to drop response here. 20g of NaCl at 50°C Press enter key to drop response here.
Asked by Nico 1 answer
Match the missing coefficient to the correct number of molecules so that the equation adheres to the conservation of mass. (X)N2 + (Y)H2 → (Z)NH3(1 point) Put responses in the correct response input area to answer the qu...
Asked by Nico 1 answer
Determine whether the statement is true or false. The picture chemical reaction is balanced: (1 point) Responses True True False
Asked by Nico 1 answer
The chemical equation for the reaction between magnesium (Mg) and hydrochloric acid (HCl) is shown. Mg + 2HCl → MgCl2 + H2 Fiona weighs the magnesium and hydrochloric acid before the reaction and finds a total mass of 55...
Asked by Nico 1 answer
(A) Fe + (B) Cl2 → (C) FeCl3 In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?(1 point) Put responses in the correct response input area t...
Asked by Nico 1 answer
Match the following equations to the type of reaction.(2 points) Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Res...
Asked by Nico 1 answer
A chemist is trying to get two substances to react, but he is unsuccessful. He knows that the two substances should react with one another. Which of the following could he do to possibly get the substances to react? (Sel...
Asked by Nico 1 answer
Complete the input table for the function f (x) = (x + 3)^2 - 2 x: 1, 2, 3, 4 f (x): f(1) = __, f(2) = __, f(3)= __, f(4) = __
Asked by Nissan GT-R R35 Nismo 1 answer
What happens to the volume of a gas when the temperature is increased?(1 point) Responses The volume is decreased The volume is decreased The volume is increased The volume is increased The volume stays the same
Asked by Nico 1 answer
What would happen if a scuba tank (a rigid, sealed gas cylinder) heats up?(1 point) Responses The size of the gas particles in the tank would increase. The size of the gas particles in the tank would increase. The pressu...
Asked by Nico 1 answer
Bacteria is known to grow exponentially. The function is B (h) = 35(1.5)^h represents the number of bacteria, B(h), as a function of hours, h. How many bacteria will there be after only 7 1/2 hours to the nearest bacteri...
Asked by Nissan GT-R R35 Nismo 1 answer
Sodium undergoes beta decay. Match the missing parts (A, B, and C) of the nuclear equation above to their correct number or symbol: (1 point) Put responses in the correct response input area to answer the question. Selec...
Asked by Nico 1 answer
A radioisotope has a half-life of 7.5 hours. How many half lives have occurred after 67.5 hours?(1 point) Responses 9 half-lives 9 half-lives 7 half-lives 7 half-lives 8 half-lives 8 half-lives 10 half-lives
Asked by Nico 1 answer
Americium-241 is a radioactive substance used in smoke detectors. The half life of americium is 432 years. If a smoke detector initially contains 1 gram of Americium 241, how much will remain in 1,296 years?(1 point) Res...
Asked by Nico 1 answer
Which of the following arbitary elements below can make +2 charged ions? a X b Z c A d Y e E
Asked by tyrone 1 answer
Quadrilateral QRST has vertices at Q (1,-5) R(2,8), S(4,4), T (1,1). The measure of angle Q is 108 degrees, and the measure of angle R is 108-2x. Determine if quadrilateral QRST is a parallelogram, and if so, solve for x
Asked by Liz 1 answer