02/01/21

Molarity of Lysol Chemistry
If Lysol Spray (539 grams) has a percent composition of 58% w/w Ethanol, what is the Ethanol's molarity?
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02/01/21

Chemistry Hw Gas Laws
Q1. A container of gas is initially at 25L, 0.500 atm and 25 ˚C. What will the pressure be at 69 ˚C if volume decreased to 13L?
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02/01/21

This is a Physics question in the unit of Energy
I need help on help on determining the amount of mechanical work done.
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01/24/21

From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 9.9 m/s.
(b) After 0.46 s, how far beneath the cliff top is the pebble?
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01/24/21

A large cannon is fired from ground level over level ground at an angle of 19 degrees above the horizontal. This initial speed is 202 m/s. Neglecting air resistance
how far will the projectile travel in the horizontal direction before striking the ground?
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01/24/21

Find the centroid of the triangle whose vertices are the points A(−1,−3),B(0,4), and C(5,1). Measure the distance from M to each vertex and M to each opposite side. What ratio do you notice?
Please help in this subject, Partitioning Directed Segments on the Coordinate Plane
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01/24/21

Reaction Rate and Stoichiometry
For the decomposition of hydrogen iodide on a gold surface at 150 °C2 HI(g)H2(g) + I2(g)the average rate of disappearance of HI over the time period from t = 0 s to t = 4248 s is found to... more
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01/24/21

Find the component and magnitude of the vector "w" that has the initial point (-8, -12) and terminal point (4, 1).
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01/23/21

Find the area of the sector of a circle with radius 5 yards formed by a central angle of 4 π/3 radians. Give your answer correct to 3 decimal places square yards
Find the area of the sector of a circle with radius 5 yards formed by a central angle of 4π/3  radians. Give your answer correct to 3 decimal places square yardsI got 0.914 and it was wrong, Please... more
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01/23/21

need chemistry help

how many moles of lithium are required to make 0.383 moles of calcium in the equation below CaS + Li —> Li2S + Ca
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01/22/21

Dynamics: Kinetic Friction
The force of friction between an object and the surface upon which it is sliding is 51N and the coefficient of friction between them is 0.37. What is the weight of the object?
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01/22/21

chemistry stoichiometry problems
In the balanced chemical equation below, how many moles of lithium are required to make 0.485 moles of calcium?CaS + 2 Li —> Li2S + Ca
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