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3 years ago

HELP ASAP PLEASE

1 answer:

6 0

Randomly pick 50 students from each grade level. 1:1 ratio of boys to girls. Randomly section 1/2 of the 50 students from each grade level into groups A and B. Have group A drink Starbucks. Have group B drink nothing. Hand the same academic test of mixed subjects to each student. Record the data.

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One of the main ideas of the Quantum Theory is that:

gladu [14]

The energy of an electron can be change only by set amounts.

The electrons in an energy level of an atom can only move to a higher or lower energy level only if it absorbs or emits a certain amount of energy. If the electron does not have enough energy to move to the next energy level then it will never move.

8 0

3 years ago

Read 2 more answers

HELP!!!! Please choose the correct label for this diagram A. Fossil Correlation B. Uniformitarianism C. Faunal Succession D. Fos

Anna35 [415]

Answer:

Uniformitarianism

Explanation:

5 0

3 years ago

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What is ozone ? A) dissolved oxygen B) the main catalyst in photosynthesis C) a type of oxygen D) a form of calcium carbonate

kykrilka [37]

Answer:

Explanation:

ozone is a type of oxygen. It's chemical compound is 03. Just 1 more molecule than regualr oxygen.

Glad I was able to help!!

7 0

3 years ago

Read 2 more answers

Use the following equation to answer question 1-4. Make sure you balance first.

worty [1.4K]

<h3>Answer:</h3>

5.2 mol H₂O

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 6HCl + Fe₂O₃ → 2FeCl₃ + 3H₂O

[Given] 10.4 mol HCl

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

[RxN] 6 mol HCl = 3 mol H₂O

<u>Step 3: Stoichiometry</u>

Set up: $\displaystyle 10.4 \ mol \ HCl(\frac{3 \ mol \ H_2O}{6 \ mol \ HCl})$
Multiply/Divide: $\displaystyle 5.2 \ mol \ H_2O$

4 0

3 years ago

5. When argon was discovered, it was placed between chlorine and potassium, even though the periodic

Neporo4naja [7]

Because the modern periodic table is according to icnreasing atomic numbers.Ar has the atomic number 18 and potassium 19 so Argron is placed before K in the Modern periodic table.

4 0

3 years ago