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3 years ago

PLEASE HELP SOON!!

Chemistry

1 answer:

Genrish500 [490]3 years ago

3 0

Answer:

1. electron cloud

2. 47 electrons

3. 8

4. 16

5. electrons enter orbitals of lowest energy first

6. the 2s orbital is at a higher energy level

Hope this helps!

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Which statements correctly describe light? (Select all that apply.)

Ainat [17]

Answer:

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2 years ago

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** GIVEN THE BRAINLIEST** IF CORRECT!!

Drupady [299]

Answer is: The zooplankton can be used to help control algal growth in some coral communities.

Hypothesis is a suggested explanation for an observable phenomenon.

Steps of the scientific method:

1) ask a question about something that is observed.

2) do background research.

3) construct a hypothesis, an attempt to answer questions with an explanation that can be tested. In this example, does the presence of a certain type of zooplankton inhibited the algae growth

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4 years ago

Studio

coldgirl [10]

Answer:

0.895 g/mL

Explanation:

Step 1: Given data

Mass of liquid Z (m): 2.763 lb

Volume of liquid Z (V): 5.93 cups

Step 2: Convert "m" to grams

We will use the relationship 1 lb = 453.59 g.

$2.763 lb \times \frac{453.59 g}{1lb} = 1,253g$

Step 3: Convert "V" to milliliters

We will use the relationship 1 cup = 236.59 mL.

$5.93cup \times \frac{236.59mL}{1cup} = 1.40 \times 10^{3} mL$

Step 4: Calculate the density of the liquid Z

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$\rho = \frac{m}{V} = \frac{1,253g}{1.40 \times 10^{3}mL } = 0.895 g/mL$

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3 years ago

Predict the products of the following reaction:

Alexus [3.1K]

MgCO3 + 2LiCl is the product of the above reaction.
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3 years ago

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Pick the correct products for the following reaction acid + metal reaction: 2 HNO3 + Co -->

MrMuchimi

Answer:

2. Co(NO3)2 + H2

Explanation:

Hello,

In this case, we are evidencing a simple displacement reaction wherein the cobalt is able displace the hydrogen to produce cobalt (II) nitrate and gaseous hydrogen as a result of cobalt's higher activity:

$2 HNO_3 + Co\rightarrow Co(NO_3)_2+H_2$

Therefore, answer is 2. Co(NO3)2 + H2.

Best regards.

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3 years ago

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