Answer:
The answer to this expression a/5+4= a+20/5
Explanation:
Lowest common factor is 5
a/5+4 now gives a+20/5
ANSWER: ECDYSONE
EXPLANATION: Ecdysone is produced and released from the prothoracic gland located at the prothorax of the insects, which act mainly to stimulates molting or ecdysis (i.e ex-sheating of old cuticle) in insects.
Moreover, the release of ecdysone to trigger molting and metamorphosis, is stimulated by PTTH .
Furthermore, in cases where juvenile hormone is absent, an insect will still metamorphose into the adult form.
Answer:
B. Atoms are made of particles that have a negative charge.
Explanation:
Thomas is a chemist which performs an experiment using cathode ray tube. In this experiment he observed that all atoms contains electron which has negative charge. He concluded that most of mass of atom is present in the nucleus of an atom. In nucleus, proton and neutron are present which are a heavy particles and most of the space around the nucleus is empty.
Answer:
Neutrons = 61
Explanation:
Protons = 47 Electrons = 47 Neutrons = 61
An atom contains equal numbers of protons and electrons. Atoms have no overall electrical charge because the number of positive protons equals the number of negative electrons. Number of protons = atomic number. All atoms of an element have the same number of protons. Atoms of different elements have different numbers of protons.
Atomic Number = Number of Protons OR Electrons Mass
Number = Number of Protons AND Neutrons