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Colt1911 [192]
3 years ago
6

A doctor uses an instrument(s) that emits light and allows the doctor to view the inside of a patient’s intestine.

Chemistry
2 answers:
jeka943 years ago
8 0

Answer:

its fiber optics. the other answers don't make sense.

Explanation:

svlad2 [7]3 years ago
4 0

Answer:

I'd say telescope

Explanation:

A microscope is used to observe particles that cannot be seen with the naked eye

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The process by which hot and cold air are transferred in the atmosphere is
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Convection: the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

hope that helps :)

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3 years ago
NO ONE ANSWERS MY QUESTIONS
leva [86]

Answer:

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3 0
2 years ago
Complete the following equations : H3PO4 = 3H+ --------------- CaSO4 = Ca 2+ ---------------- (2) b) Write the formulae of the s
jeka94

Answer:

H₃PO₄ → 3H⁺ + PO₄³⁻

CaSO₄ → Ca²⁺ + SO₄²⁻

b. CaCl₂

Explanation:

When H₃PO₄ is dissolved in water, there are produced the H⁺ and PO₄³⁻ ions. The equation is:

H₃PO₄ → 3H⁺ + PO₄³⁻

In the same way, CaSO₄ is dissolved in:

CaSO₄ → Ca²⁺ + SO₄²⁻

b. Now, in a reaction of an acid (HCl) and a base (Ca(OH)₂), water, H₂O and a salt are produced:

2 HCl + Ca(OH)₂ → 2H₂O + Salt

The ions that are not present in the reaction are Cl⁻ and Ca²⁺, the salt is CaCl₂ and the balanced reaction is:

2 HCl + Ca(OH)₂ → 2H₂O + CaCl₂

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2 years ago
Convert the following<br> 4. 100 cm =<br> 5. 453 m = _<br> 6. 89847nm = _<br> 7. 3Mm =
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