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2 years ago

15

SCIENCEEEE!!!! HELPPPPP MEEEE OUTTTT!!!!

1 answer:

krok68 [10]2 years ago

3 0

B and e

first we need to balance the NH3 hence first we do E and multiplying the coefficient by 2. that will leave us with N2+H2–>2NH3.
N2 and H2 is balanced and now all that is left to do is the balance H2 by 3 as there is 6H on RHS hence we need 6H on LHS

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The column just before the stable noble gases are called the

Sergio039 [100]

Is called the Halogen

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2 years ago

What is the chemical formula of (Sodium hydroxide ) ??

Margaret [11]

$\huge{ \color{black}{ \boxed{ \color{hotpink}{Answer}}}}$

what is the chemical formula of (Sodium hydroxide ) ??

<h3> ⚘ NaOH</h3>

Sodium hydroxide, Sodium oxidanide

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2 years ago

You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution

LUCKY_DIMON [66]

<u>Answer:</u> The mass of solution having 768 mg of KCN is 426.66 grams.

<u>Explanation:</u>

We are given:

0.180 mass % of KCN solution.

0.180 %(m/m) KCN solution means that 0.180 grams of KCN is present in 100 gram of solution.

To calculate the mass of solution having 768 mg of KCN or 0.786 g of KCN (Conversion factor: 1 g = 1000 mg)

Using unitary method:

If 0.180 grams of KCN is present in 100 g of solution.

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3 years ago

17. Which of the following statement best explains what pollination is?

Anna35 [415]

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4 0

2 years ago

Read 2 more answers

What is the percent of hydrogen by mass in HNO3? (Molar<br> mass of HNO3 = 630 g/mol)

xxMikexx [17]

Answer:

63.01284 g/mol

Explanation:

This compound is also known as Nitric Acid.

Convert grams HNO3 to moles or moles HNO3 to grams

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Element Symbol Atomic Mass # of Atoms Mass Percent

Hydrogen H 1.00794 1 1.600%

Nitrogen N 14.0067 1 22.228%

Oxygen O 15.9994 3 76.172%

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2 years ago