Explanation:
If heat is released in a reaction, enthalpy Change in the reaction is negative, then it will be exothermic
Answer:
The elements with the same atomic number but different mass are called isotopes.
Explanation:
Isotopes are atoms of the same element that differ in the number of neutrons in their nuclei. That is, isotopes are atoms that have the same atomic number - equal numbers of protons - but different atomic mass - different number of neutrons. Their chemical properties, however, do not differ.
<span>A) Africans began forming trade unions and helping independence movements.
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The correct answer is openness
According Five Factor Model of Personality by McCrae and Costa, humans possess five broad personality trait dimensions, which are openness, neuroticism, extraversion, conscientiousness and agreeableness. Openness includes characteristics such as willingness to try new experiences or things, imagination, creativity, a broad range of interests, etc. Since Travis is eager to try sushi, which is something new for him, he ranks high on openness.
The correct answer is A) The space shuttle program has come to an end.
The author thinks that the time may now be right to focus on ocean research because the space shuttle program has come to an end.
The main argument for the author to support ocean exploration is that he considered that the space shuttle program of NASA had already ended in 2011. Too much money -billions of dollars- had been invested in the space program, and now it was time to enter the unknown territories of the oceans.
The author is probably right. We do not much about oceans and what could be under the sea. That is a real mystery. We have explored enough about the space, according to our possibilities and limitations, but practically the ocean is unknown. So ocean exploration would be a real challenge.
