chemistry
In the reaction between formic acid (HCHO2) and sodium hydroxide, water and sodium formate (NaCHO2) are formed. To determine the heat of reaction, 75.0 mL of 1.07 M HCHO2 was placed in a coffee cup calorimeter at a temperature of 20.8 °C, and 45.0 mL of 1.78 M NaOH, also a...
Math
21 pairs of shoes or 42 shoes
Math
There are 9 boys and 12 girls at a party,everyone is wearing a pair of shoes.How many shoes are there
Writing
What are the five features of a letter.
Math
Fun video rents videos for $1 per video plus chafes a $5 membership fee. Your equation should represent the total cost for renting any number of videos. write an equation Function Table
physics
3 points particles with masses 4kg,2kg,3kg are at the corners of equilateral triangle of side m =2m.
math
i dont know but the question is to circle the object that is heavier(shoe,sock,feather,marble,brick and tape measure)i know a brick,and the tape measure is heavy but i'm not sure about the shoe and the marble
math
is a marble heavy more than 1 pound
AP Chemistry
1.A compound consists of 65.45% C, 5.492% H, and 29.06% O on a mass basis and has a molecular mass of 110 g/mol. Determine the molecular formula of the compound. 2. What is the formula weight of iron (II) sulfate? Answer in units of g/mol. 3. What is the % nitrogen by weight i...
finance math
A car dealer purchased 2 cars, one for $1500 and the other for $20000, He then sold the first car at a loss of 14% and the second car for a profit of 15%. Find the dealer¡¯s profit for the whole transaction and express the answer as a percentage of his total cost.
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