Inside large stars, hydrogen is converted into helium. as this occurs some of the mass is converted into energy. this is known as

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water