Metamorphic rock can change into igneous<span> or </span>sedimentary rock<span>. </span>Igneous rock forms<span> when magma cools and makes crystals. Magma is a hot liquid made of melted minerals. The minerals can form crystals when they cool.
</span><span>so is C) metamorphic </span>
Answer:
[H₃O⁺] = 0.05 M & [OH⁻] = 2.0 x 10⁻¹³.
Explanation:
- HNO₃ is completely ionized in water as:
<em>HNO₃ + H₂O → H₃O⁺ + NO₃⁻.</em>
- The concentration of hydronium ion is equal to the concentration of HNO₃:
[H₃O⁺] = 0.05 M.
∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.
<em>∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺] </em>= 10⁻¹⁴/0.05 = <em>2.0 x 10⁻¹³.</em>
Answer:
Atoms are composed of extremely small particles that are too small to be seen with an optical microscope.
Size at the atomic level is measured on the nanoscale.
Atoms are made of three subatomic particles - protons, neutrons, and electrons.
Protons:
- positively charge
- located in the nucleus
Neutrons:
- no charge (neutraly charge)
- located in the nucleus
Electrons:
- negatively charged
- located around the nucleus
Atomic number (Z) = the number of protons in the nucleus of an atom.
(i apologize, i don't understand the last part...)
Answer:
graphite
Explanation:
Graphite is opaque, a very good lubricant, a good conductor of electricity, and a thermal insulator. Allotropes of carbon are not limited to diamond and graphite, but also include buckyballs (fullerenes), amorphous carbon, glassy carbon, carbon nanofoam, nanotubes, and others.
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
