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3 years ago

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Balance and classify the following equations as synthesis, decomposition, single replacement, double replacement, or combustion:

a. C4H10 + 02 -> CO2 + H20 Reaction Type: b. ___ HNO3 + Mg(OH)2 -> Mg(NO3)2 + H20 Reaction Tyne.

1 answer:

vodomira [7]3 years ago

8 0

See which one is the bigger equitation to classify the smallest in order

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If a wave is traveling at a steady speed and its frequency is

Nataly [62]

Answer:

If the frequency is doubled, the wavelength is only half as long.

Explanation:

Wave speed equals frequency*wavelength. So doubling the frequency must halve the wavelength in order for wave speed to remain the same.

4 0

3 years ago

Suppose a piece of silver jewelry contains 7.49x10^22 atoms of silver (Ag). how many moles of silver are in the jewelry?

zalisa [80]

Answer:

0.124 mol Ag

General Formulas and Concepts:

<u>Atomic Structure</u>

Moles

<u>Stoichiometry</u>

Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 7.49 × 10²² atoms Ag

[Solve] mol Ag

<u>Step 2: Identify Conversions</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 7.49 \cdot 10^{22} \ atoms \ Ag(\frac{1 \ mol \ Ag}{6.022 \cdot 10^{23} \ atoms \ Ag})$
[DA] Divide [Cancel out units]: $\displaystyle 0.124377 \ mol \ Ag$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.124377 mol Ag ≈ 0.124 mol Ag

Topic: AP Chemistry

8 0

3 years ago

HELP, 40 POINTS !!

Lemur [1.5K]

1. Solubility

2. Heat 100g of water to 35 degrees C. Add 37 grams of mystery salt.

3. If all the salt dissolves, it's KCl. If not, it's KNO3.

4 0

4 years ago

Study the following unbalanced half-reaction. Which equation represents the balanced half-reaction? H2O2 ---> H2O

Aleonysh [2.5K]

O: 1*2 = 2*1
<span>H 2 + 2 = 2*2 </span>

<span>answer C hope you get it right</span>

5 0

3 years ago

Read 2 more answers

Which represents the correst equilibrium constant expression for Cu(s) +2Ag<------> Cu^2 (aq) +2Ag(s)

nataly862011 [7]

Answer:

$Kc=\frac{(Cu2)(Ag)^2}{(cu)(Ag)^2}$

Explanation:

because it is products / reactants

Hope this helps:)

7 0

3 years ago