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Keith_Richards [23]
3 years ago
7

PWEAS HELP ME ASAP THIS WAS SUPPOSED TO BE DONE LAST MONTH

Chemistry
2 answers:
liq [111]3 years ago
8 0

Answer:

Scientific models are used to explain and predict the behavior of real objects or systems.

Explanation:

They are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences. Drawings help people visualize as well as see the concepts that are trying to be seen.

Dennis_Churaev [7]3 years ago
7 0

Answer:

Scientific modeling, Is the generation of a physical, conceptual, or mathematical representation of a real phenomenon that is difficult to observe directly. Scientific models are used to explain and predict the behavior of real objects or systems and are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences. Although modeling is a central component of modern science, scientific models at best are approximations of the objects and systems that they represent—they are not exact replicas. Thus, scientists constantly are working to improve and refine models.

Drawings help people visualize as well as see the concepts that are trying to be seen.

I don't know how to figure out the other things.

Explanation:

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Which of the following correctly describes a mixture? (4 points) Group of answer choices The particles are chemically bonded tog
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Answer:

The particles have no set ratio for how to combine, and they can be separated by physical means.

Explanation:

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3 years ago
1.1 Define the concept risky behaviour?​
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Answer:

Risky behavior or risk-taking behavior is defined according to Trimpop (1994) as “any consciously, or non-consciously controlled behavior with a perceived uncertainty about its outcome, and/or about its possible benefits, or costs for the physical, economic or psycho-social well-being of oneself or others.” In addition to this broad definition, there are other definitions of risky behavior depending on the field of research. While in the economic view, risk is defined in terms of the variability of possible monetary outcomes, in the clinical literature, the risk is generally defined as exposure to possible loss or harm (Schonberg, Fox, & Poldrack, 2011). Turner et al. (2004) described risk-taking behavior further as either a socially unacceptable volitional behavior with a potentially negative outcome in which precautions are not taken, such as speeding, drinking and driving, drugs abuse, unprotected sex and so on.

6 0
3 years ago
What happens when two sound waves meet in constructive interference?
vivado [14]

Answer:

D

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The sound gets louder

8 0
3 years ago
Place where food is stored and partially digested
Ostrovityanka [42]
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Explain: Chyme passes from the stomach to the small intestine. Further protein digestion takes place in the small intestine.
3 0
3 years ago
A substance decays so that the amount a of the substance left after t years is given by: a = a 0 · (0.9) t , where a 0 is the or
Dennis_Churaev [7]

I think the correct form of the equation is given as:

a = a0 * (0.9)^t

where t is an exponent of 0.9 since this is an exponential decay of 1st order reaction

 

Now to solve for the half life, this is the time t in which the amount left is half of the original amount, therefore that is when:

a = 0.5 a0

 

Substituting this into the equation:

0.5 a0 = a0 * (0.9)^t

0.5 = (0.9)^t

Taking the log of both sides:

t log 0.9 = log 0.5

t = log 0.5 / log 0.9

t = 6.58 years

 

Answer:

half life = 6.58 years

3 0
3 years ago
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