CHEMISTRY HIGH SCHOOL

Tony made 14L of lemonade for a party. His guests drank 9500mL of the lemonade. How many milliliters did Tony have left?

Answers

Answer 1
Answer: Since 9500 mL of lemonade equals 9.5 liters, that means that Tony has 4.5 liters left, because 9.5 + 4.5 = 14

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HIGH SCHOOL

What are some examples of both types of physical properties? Give an example of something that has high specific heat capacity.

Answers

Answer:

boiling point,color,melting point, mass, volume,and density. Water has a high specific heat capacity.

Explanation: I hope this helps :)

The first part is bioling piont

MIDDLE SCHOOL

when heated, the temperature of a water sample increased from 15 degrees celsius to 39 degrees celsius. It absorbed 4300 joules of heat. What is the mass, in grams, of the sample?

Answers

Mass of water: 43 g

Explanation:

When a substance is heated, the temperature of the susbtance increases according to the equation:

where

Q is the amount of heat supplied to the substance

m is the mass of the substance

C is the specific heat capacity of the substance

is the increase in temperature

In this problem, we have:

Q = 4300 J is the heat absorbed by the water

C = 4200 J/gC is the specific heat capacity of water

is the increase in temperature

By re-arranging the equation, we can find the mass:

Learn more about specific heat:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

MIDDLE SCHOOL

The metalloids that are included in group 15 are antimony
and

Answers

Answer:

Arsenic is also in group 15.

MIDDLE SCHOOL

Name given to a negatively charged atom?

Answers

An anion is a negatively charged particle.

Answer:

A negativly charged atom is called an Anion

HIGH SCHOOL

How do plants play an important role in preventing wind erosion

Answers

By holding down the soil
Their roots secure the soil and keep it from blowing away from the wind.
Hope that helped.
HIGH SCHOOL

Octane is a component of fuel used in internal combustion engines. the dominant intermolecular forces in octane are a. dipole-dipole forces.
b. london dispersion forces.
c. hydrogen bonding.
d. covalent bonds.
e. carbon-hydrogen bonds.

Answers

I think the correct answer would be B. Octane is a component of fuel used in internal combustion engines. the dominant intermolecular forces in octane are london dispersion forces. Dipole-dipole bonds happens only with polar substances. Hydrogen bonding occurs when H bonds with an O, F or N atom. Covalent bonds are not intermolecular force rather it is an intramolecular force. Carbon-Hydrogen bonds, as far as I know, are not a type of bond, intermolecular or intramolecular. So, we are left with london dispersion force. It is a temporary force that happens when electrons of two atoms in adjacent would occupy positions that would form dipoles temporarily.
MIDDLE SCHOOL

Atomic masses are measured in

Answers

The atomic mass of an element is measured in amu: Unified atomic mass unit.

MIDDLE SCHOOL

What is recrystallization?

Answers

In chemistry, recrystallization is a technique used to purify chemicals. By dissolving both impurities and a compound in an appropriate solvent, either the desired compound or impurities can be removed from the solution, leaving the other behind.

Recrystallization is the process in which deformed grains of the crystal structure are replaced by a new set of stress-free grains that nucleate and grow until all the original grains have been consumed. The process is accomplished by heating the material to temperatures above that of crystallization.

HIGH SCHOOL

Explain two reasons why SI is easier to use than the English system

Answers

Answer:

1. SI units are easy to remember

2. English system needs lots of calculation while converting it from one unit to other

3. SI unit is universally accepted.

Explanation:

1. SI units are easy to remember

2. English system needs lots of calculation while converting it from one unit to other.

in SI unit base 10 is used to convert from one unit to other,I is similar to number system, therefore it is very easy to remember and convert between units.

In  English system it is very difficult to memorize when we have to convert bigger unit to smaller unit by several orders of magnitude and it needs lots of calculation.

Example:

Suppose we have to determine how many millimeters are there in a meter? then we can easily determine

we can easily remember it as milimeter means

on the other hand if we have convert microns into a mile than it needs lots of calculation.

3. SI unit is universally accepted.

Because SI has more standard measurements such as kilograms mol ect.
its better then the English system in that way
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