Explain the question more please hggghhg
Answer:
atom ion
Explanation:
When an atom gains/loses an electron, the atom becomes charged, and is called an ion.
Answer
is: the molar mass of a covalent compound is 90.4 g/mol.
<span>
m(compound) = 0.486 g.
m(water) = 25 mL </span>· 1 g/mL = 25 g ÷ 1000 g/kg = 0.025 kg.<span>
ΔT = 0°C - (-0.40°C) = 0.40°C.</span>
Kf(H₂O) = 1.86°C/m.
M(compound) = Kf · m(compound<span>) /
m(water) · ΔT.
M</span>(compound)<span>= 1.86°C/m · 0.486 g /
(0.025 kg · 0.4°C).
M</span>(compound) = 90.4 g/mol.
Answer:
1. Cells contain DNA that is passed cell to cell during cell divison.
2. Cells are similiar in chemical composition and reactions that maintin homeostasis.
3. All basic chemical and physiological functions are carried out inside the cell.
4. Cell activity depends on the oragnelles withen the cell.
Hope this helps!
Answer: The correct answer is (D).
Explanation:
Space photography help astronomers:
- To visualize and observe the position and appearance of celestial objects like: path of orbiting planets ,dim stars which invisible to naked eyes ,far away galaxies etc.
- To observe any phenomena which is occurring at macro level for example: collision of steroids and meteors etc.
