Bronze contains 90 to 95 percent copper and 5 to 10 percent tin. Because these percentages can vary, bronze is classified as(1) a compound (3) a mixture
(2) an element (4) a substance

Answers

Answer 1
Answer: Answer: a mixture.


Justification:

1) Pure substances have a definite chemical formula: the same kind of atoms with the same fixed ratios and chemical bonds. Therefore, the percents of each element do not varye.


2) Elements and compounds are pure substaces. For example, Fe, Mg, Ti, are elements, and CO₂, CO, H₂CO₃ are compounds. Each of them will have always the same kind of atoms, in the same ratio and with the same chemcial bonds. Therefore the percents of the elements do not varye.


3) Mixtures are formed by the physical combination (not chemical bonds) of different elements or compounds in variable proportions. As indicated, this describes the material bronze, in virtue of the variation of its composition. Other examples of mixtures are solutions (like brines), air, ocean water, and milk: different brines, different oceans and different milk have different contents of elements or compounds.




Answer 2
Answer:

Answer:

(3) a mixture

Explanation:

Castle learning


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Scientists use results from new experiments to

Answers

Answer:

The scientists use results from the new experiments to change the existing explanations of how nature functions. The world is changing continuously. There are outcomes, which have been obtained from the scientific studies performed earlier, which may no longer be accurate at present because of certain factors that may not have been discovered or present in those times. Other scientific findings may also be further acknowledged as true from the outcomes of the new experiments.

Final answer:

Scientists use results from new experiments to validate or refute existing theories and to explore new scientific territory. This is done by gathering and analyzing data from these experiments, ultimately leading to more informed and detailed theories.

Explanation:

Scientists use results from new experiments to both confirm existing theories and explore new territories of knowledge. Conducting an experiment helps scientists gather data and observations. These results then provide evidence that either supports or refutes a hypothesis, leading to more advanced and precise scientific theories. For example, when Albert Einstein proposed his theory of relativity, further experiments such as the Eddington experiment during a solar eclipse provided data evidence that supported his theory.

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4-heptanone treated with peroxyacetic acid

Answers

creates a black substance that then hardens

YOU GET 55 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I am not afraid to report you and email a worker. 1) Name the type of energy we been discussing that is not found in the simulation.

2) Why doesn't the sun make the wheel move?


solve these to and you get picked brainlley

Answers

Answer:

there's no way to answer that

The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists of

Answers

The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists observations based on large sample sizes. 

Final answer:

The scientific evidence used by scientists usually involves data collected during the course of an experiment. The evidence can be qualitative or quantitative and it is analyzed to draw conclusions. These conclusions either support or reject the initial hypothesis, leading to further hypothesis testing.

Explanation:

Scientists use various forms of evidence to support or critique the conclusions of experiments. This evidence largely consists of data collected during the experiment, which could be either qualitative (descriptive) or quantitative (numerical). These data help in analyzing the results through methods such as statistical, mathematical, or graphical.

Furthermore, scientists use two types of logical reasoning: inductive reasoning using particular results to produce general principles, and deductive reasoning predicting results by applying general principles. After analysis, scientists draw conclusions that can either support or reject their initial hypothesis. If the hypothesis is supported, the process moves on to testing the next related hypothesis. If it's rejected, a new one is formulated for further testing.

Researchers typically present their findings in peer-reviewed scientific papers comprising of sections like introduction, materials and methods, results, and a concluding discussion. This organized and systematic approach ensures the integrity of the scientific process and encourages a thorough scrutiny of every experimental conclusion.

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• 1) The pressure of a sample of gas in a 2.00-L container is 876 mmHg.What will the pressure be if the sample is placed in a 400 mL
container? P1V1=P2V2

Answers

Answer:

4380 mmHg

Explanation:

Boyle's Law can be used to explain the relationship between pressure and volume of an ideal gas. The pressure is inversely related to volume, so if volume decrease the pressure will increase. It can be expressed in the equation as:

P1V1=P2V2

In this question, the first condition is 2L volume and 876 mmHg pressure. Then the system changed into the second condition where the volume is 400ml and the pressure is unknown. The pressure will be:

P1V1= P2V2

876 mmHg * 2L = P2 * 400ml /(1000ml/L)

P2= 876 mmHg * 2L / 0.4L

P2= 4380 mmHg

which of the following substances diffuses faster in a beaker filled with water  a drop of honey or drop of red ink

Answers

red ink since the substance is has a lower viscosity

red ink because it is more soluble in water than honey.