# Gennelle

Most popular questions and responses by Gennelle-
## math

It has been observed that a particular plant's growth is directly proportional to time. It measured 2 cm when it arrived at the nursery ang 2.5 cm exactly one week later. If the plant continues to grow at this rate, determine the function that represents

*asked on July 11, 2016* -
## Chemistry

A 6.3 g sample of solid NH4NO3 is dissolved in 50g of water, causing the temperature to drop from 24°C to 19°C. Calculate the ∆Hsolution in J/mol. -Thank you ☺

*asked on March 12, 2017* -
## Math

The volume V of gas varies inversely as the pressure P on it. If the volume is 240 cm^3 under pressure of 30 kg/cm^2, what pressure has to be applied to have a volume of 160 cm^3 ?

*asked on July 11, 2016* -
## chemistry

Water, compared to other substances, has one of the highest specific heat values. What is the advantage of this fact for the human body? -Thank you ☺

*asked on March 12, 2017* -
## Pre-Cal

Write the standard equation of the ellipse: 1. F1 (-4,0) and F2 (4,0), passing through (4,1)

*asked on January 17, 2017* -
## Math

A court is to be surrounded by plastic stripping 30m long. One side of the court does not need the stripping because it is a brick wall. What must be the dimensions of the court in order to obtain a maximum area? What is the maximum area? Thank you! :)

*asked on July 13, 2016* -
## Chemistry

The specific heat of a copper metal is 0.385J/g-°K. How many kJ of heat are needed to raise the temperatue of 1.1 kg block of copper from 27.5°C to 50°C? -Thank you ☺

*asked on March 12, 2017* -
## Math

Find the solution of the given equations. x-1/x^2-9+1/x-3=2/x+3 Thank you! :)

*asked on July 24, 2016* -
## Math

1. x-2/3-x>0 2. 3x-1/x+2-1equal to 0 Thank you! :)

*asked on July 25, 2016* -
## Math

Find two numbers which have a difference of 7, and a product that is a minimum. Thank you! :)

*asked on July 13, 2016*