1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rzqust [24]
3 years ago
6

raden-222 is a naturlly occuing isotope with a half life of 3.8 days if 4.0g of raden 222 gas wewre pumped in a container then h

ow much radon -222would be in the container 7.6 das later
Biology
1 answer:
svlad2 [7]3 years ago
4 0

1.0g

7.6/3.8=2

1. 4/2=2

2. 2/2=1

You might be interested in
HELP!! WILL INCLUDE LINK
ankoles [38]

First of all, I want to say that I was literally learning about this stuff not 10 minutes ago. That is a re.tardedly creepy coincidence.

1.) Science is used mostly through the field of forensics in order to study crime scenes, collect data like fingerprints and hair fibers to try to identify the suspect, as well as use things like blood splatter to try to recreate what happened during the crime. this data is then used as evidence, either for or against a suspect, in order to sway the jury's opinion.

2.) Television shows like CSI have certainly raised awareness. Forensics, which was a formally unknown and untalked about profession is now in the spotlight. However, it can lead to some problems, such as skewing jurors' expectations of what to expect from forensic specialists.

3.) The scientific method consists of five steps:

-Make an observation.

-Ask a question.

-Form a hypothesis, or testable explanation.

-Make a prediction based on the hypothesis.

-Test the prediction.

The feedback loop occurs when you use the end conclusion to form another hypothesis to another experiment. Essentially, the feedback loop means that you are continually improving upon your experiment.

4.) In a criminal trial, a suspect or defendant is being accused of a crime. It is up to the prosecutor to prove that the defendant is guilty of that crime. It is up to the defense attorney to defend the defendant and prove that he is not guilty. It is up to the judge to listen to all the evidence and afterwards to give his verdict. The scientists can be used by either the prosecutor or defense attorney to bring forth evidence that can support either of their sides.

5.) Control samples are any type of well-known forensic samples that are used to assure analysis is properly performed so that results are reliable.

6.)It was helpful for scientists to compare results from the burnt debris and unburned background material from the area to see if the gasoline was present in the unburned samples.

7.) The analytical sciences used in the courtroom are very reliable because they go through careful screening and are measured against control samples so that they are accurate.

8.) Bias can seriously mess up a case. Say, if the forensic scientist in charge of testing and taking samples from the crime scene is an acquaintance of the suspect, he could purposely mess up the testing so that he clears his friend.

3 0
3 years ago
Which of the following describes the embryonic period
dangina [55]

There should be options for this question. I manged to find them elsewhere. They are:

A) the period during which tremendous growth occurs and the organs continue to develop and become  functional

B) the period during which the umbilical cord develops

C) the period during which the major organs and structures of the organism first develop

D) the period during which the zygote moves down to the uterus and begins to implant in the lining

The correct answer is C. The embryonic period is the period during which the major organs and structures of the organism first develop. The embryonic period lasts from implantation of the egg in the uterus until about 8 weeks from the time of conception. It is the second major stage of prenatal development, prior to embryonic is the germinal stage and lastly is the fetal stage.

8 0
3 years ago
Where should the majority of fat in the mediterreanean diet come from?
TiliK225 [7]
Mediterrana I think
8 0
3 years ago
What is the correct order of structures in a chromosome from smallest to largest?
Ulleksa [173]
The correct order of structures in a chromosome from smallest to largest are:
Nucleotides, Genes, Chromosomes, and Genome
4 0
3 years ago
Plsss Help Will mark brainliest
Harlamova29_29 [7]

Answer:

it allows some but not all

hope that helped

8 0
3 years ago
Read 2 more answers
Other questions:
  • Water in the diet can come from the foods that you eat, as well as liquid foods and beverages. The dietary reference intake for
    5·1 answer
  • The structure shown in the inset (right) show the level of organization called
    11·1 answer
  • How energy is transferred through a food web and food chain using the law of conservation of energy?
    11·1 answer
  • How do waterfalls form?
    9·2 answers
  • Who know what is the end product of replication
    9·2 answers
  • Search online to find at least two articles that have opposite opinions on the repeated breeding of pedigree dogs. Does one arti
    10·2 answers
  • Look at the picture of the sharp object below. It is part of an animal.
    12·2 answers
  • Why do prokaryotic cells usually reproduce more quickly than eukaryotic cells
    7·1 answer
  • Which best describes a genetic mutation to a sequence of DNA that changes the way the sequence is read?
    8·1 answer
  • In the context of a scientific experiment, what is a control group?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!