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Elena L [17]
4 years ago
13

Which of the following statements is true?

Chemistry
2 answers:
Shtirlitz [24]4 years ago
8 0

Answer: Elements in the last period are radioactive.

Explanation:

qwelly [4]4 years ago
5 0

Answer: Elements in the last period are radioactive.

Explanation:

Elements in the last period are all radioactive because they have an unstable nucleus. This period is known as the Actinides and contain elements such as Plutonium which occurs in nature and has the heaviest nucleus , while other elements are created artificially.

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Paintball is a popular recreational activity that uses a metal tank of compressed carbon dioxide or nitrogen to launch small cap
irinina [24]
We know,
1000 cm³ = 1 L
1 cm³ = 1 / 1000 L
508 cm³ = (1 / 1000) * 508 L = 0.5080 L

So, 508 cm³ = 0.5080 L

Now,
We know,
22.4 L = 1 mole
1 L = 1 / 22.4 mole
0.5080 L = (1 / 22.4) * 0.5080L = 0.0227 moles

So, 0.0277 moles  moles of CO_2 are added to the tank before it is used for paintball.
6 0
3 years ago
Which memrane lines the abdomino pelvic cavity
Scilla [17]

Answer:

The peritoneum

Explanation:

The peritoneum is the serous membrane that surrounds several organs in the abdominopelvic cavity. The tunica vaginalis is the serous membrane, which surrounds the male gonad, the testis. The two layers of serous membranes are named parietal and visceral. Between the two layers is a thin fluid filled space.

hope it helps, and pls answer this brainly.com/question/22410918

tysm if u do ill give brainliest :D

4 0
3 years ago
I love greglove3memes 4 evr
mars1129 [50]

Answer:

same

Explanation:

3 0
3 years ago
Read 2 more answers
2. Find the empirical formula for a compound which contains 32.8% chromium and 67.2%<br> chlorine.
Blababa [14]

The empirical formula is CrCl₃.

Explanation:

To find the empirical formula we use the following algorithm.

We divide each percentage by the atomic weight of each element:

for Cr   32.8 / 52 = 0.63

for Cl   67.2 / 35.5 = 1.89

The result will be divined by the smallest number:

for Cr    0.63 / 0.63 = 1

for Cl     1.89 / 0.63 = 3

The empirical formula is CrCl₃.

Learn more about:

empirical formula

brainly.com/question/5834630

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6 0
4 years ago
When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regardi
zimovet [89]
The Answer Is B. I'm sure of it 86% sure
8 0
4 years ago
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