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3 years ago

PLEASE HELP! 15 POINTS!!!!!

Chemistry

1 answer:

frutty [35]3 years ago

4 0

Answer:

chemical change

Explanation:

turning methane plus oxygen into carbon dioxide and water is a chemical process because the substances change into completely new substances (co2 and water), it's no longer methane and oxygen. It's not a physical change because physical changes only affect appearance.

If this was a lab, possible evidences of a chemical change can be bubbling, heat, color change (occasionally)... etc.

chem isn't my best course but I hope this helps

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The average dosage of oxcarbazepine for an epileptic child between the ages of 4 and 16 is 9.00 mgmg per 1 kgkg of body weight (

Helga [31]

Answer:

The answer to your question is 3 ml

Explanation:

Data

Dosage = 9.0 mg/ kg

Child's weight = 42.9 pounds

Suspension = 60 mg/ml

milliliters = ?

Process

1.- Convert the weight to kg

1 pound ------------------- 0.453 kg

42.9 pounds --------------- x

x = (42.9 x 0.453) / 1

x = 19.43 kg

2.- Calculate the milligrams the child needs

1 kg of weight ------------ 9 mg

19.43 kg ---------------------- x

x = (19.43 x 9) / 1

x = 174.87 mg of oxcarbazepine

3.- Calculate the milliliters needed

60 mg of suspension ------------- 1 milliliters

174.87 mg -------------- x

x = (174.87 x 1) / 60

x = 2.9 ml ≈ 3 ml

5 0

3 years ago

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solmaris [256]

Two or more different elements

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3 years ago

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2 years ago

Calcium chromate, cacro4, has a ksp of 7.1×10−4. what happens when calcium and chromate solutions are mixed to give 0.0200 m ca2

Serjik [45]

The solubility equilibrium of $CaCrO_{4}$ :

[tex] CaCrO_{4}(aq)<===>Ca^{2+}(aq) + CrO_{4}^{2-}(aq)\\
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3 years ago

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kkurt [141]

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More about isotopes: brainly.com/question/364529

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6 0

2 years ago