03/30/23

How many moles of potassium oxide (K2O) are in 77.5 g of the compound?
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03/29/23

In the triangle △ABC, introduce the notations a=|BC|, b=|CA|, c=|AB|, as well as ∠A=α(alpha), ∠B=β (beta) and ∠C=γ (gamma). Find b, given that a=5, sinα(alpha)=2/3 and cos β=5/8. b=?
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03/29/23

A 0.200-kg object is attached to a horizontal, light spring that has a force constant of 75.0 N/m...
A 0.200-kg object is attached to a horizontal, light spring that has a force constant of 75.0 N/m. The object is pulled 8.00 cm to the right of equilibrium and released from rest to slide on a... more
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03/28/23

Asap step by step I did try solving this and I got 4.1 which is wrong so if you could tell me what I did wrong

If 10 g of oxygen gas is in a 2.00 L container at 50 Cwhat is the pressure in the container ? Round to one decimal place. Don’t forget oxygen is diatomic
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03/28/23

Pre calc question
A chemist needs to create a 65% HCl solution. (HCl is hydrochloric acid. A "65% HCl solution" contains 65% HCl and the other 35% is water.)How much of a 87.5% HCl solution must be mixed with 20 ml... more
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03/28/23

Application of Quadratics in space exploration Part II
You are going to come up with an equation to map out John Glenn’s descent back to Earth in Friendship 7. You are supplied with 2 graphs that have relevant values on both the x and y-axis. You only... more
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03/28/23

1 g of a gas occupies 300ml at 250C and 99 KPa.

1 g of a gas occupies 300ml at 250C and 99 KPa. Find the following: Number of moles The molecular mass
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03/28/23

Quadratic Functions problem
I have an equation of "a1 released his ballon from the 10-yard line, and it landed at the 16-yard line, if the ball reached a height of 27 years, what equation represents the path of his toss?I... more
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03/28/23

Write an expression for the apparent nth term an of the sequence. (Assume that n begins with 1.)
-10/11 , 11/12, -12/13, 13/14, -14/15, ...a(n) =
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03/28/23

What unit rate describes the number of gallons per dollar
5 gallons of gas cost $16.25the cost per gallon is $3.25the question what unit rate describes the number of gallons per dollar?
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03/27/23

Write expression for simple harmonic motion with amplitude of 2.5 cm, angular frequency 5 l/s and maximum velocity at t = 0.
Write expression for simple harmonic motion with amplitude of 2.5 cm, angular frequency 5 l/s andmaximum velocity at t = 0.
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03/27/23

What quantity of heat is required to raise the temperature of 450 grams of water from 15°C to 85°c? The specific heat capacity of water is 4.18 J/g/°C
What quantity of heat is required to raise the temperature of 450 grams of water from 15°C to 85°c? The specific heat capacity of water is 4.18 J/g/°C
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03/27/23

A 47kΩ resistor and 39 kΩ resistor are in parallel
A 47kΩ resistor and 39 kΩ resistor are in parallel, and the pair in series with a 22 kΩ resistor. What isthe resistance of the combination?
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03/27/23

A jetliner touches down
A jetliner touches down at 220 km/h and comes to a halt(stop) 29 s later. What is the shortest runway on which this aircraft can land?
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03/27/23

Translate the sentence into an equation
The sum of 3 times a number and 2 is 7
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03/27/23

How do I find f or the derivative?
Find f. f''(x) = −2 + 12x − 12x2,    f(0) = 2,    f'(0) = 12
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03/26/23

geometry (please explain)
The following is an incorrect flowchart proving that point L, lying on  which is a perpendicular bisector of , is equidistant from points J and K:What is the error in this flowchart? A. JL and KL... more
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03/25/23

A spring is attached to the ceiling and pulled 20cm down from
A spring is attached to the ceiling and pulled 20 cm down from equilibrium and released. The amplitude decreases by 13% each second. The spring oscillates 7 times each second. Find an equation for... more
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03/25/23

One mole of Oxygen produces how many grams of H2O?
One mole of oxygen produces how many grams of H2O?
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03/24/23

differential equation

consider the differential equation x*ln(x) dy/dx=1 with initial condition (e,1). First solve the differential equation to find the general solution y(x), and then use it to evaluate y(e^e).
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03/24/23

What is the first step in the following problem: (6 + 2)² ÷ 12 x 3?
What is the first step in the following problem: (6 + 2)² ÷ 12 x 3?
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03/23/23

Solve by using square roots???
Solve by using square roots:3x2 - 27 = 0
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03/23/23

The position of an object at time t is given by the parametric equations; x=3t^2+1t, y=5t^2+6 Fine the horizontal velocity, the vertical velocity, and the speed at the moment where t=3.
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03/22/23

Torque ----------

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03/21/23

How many seconds will pass before the planes are at the same altitude? What will their altitude be when they're at the same altitude?
An air traffic controller is tracking two planes. To start, Plane A is at an altitude of 3500 feet and Plane B is at an altitude of 1512 feet. Plane A is gaining altitude at 30.25 feet per second... more
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