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Novay_Z [31]
2 years ago
6

How does evidence of chemical

Chemistry
1 answer:
Sliva [168]2 years ago
4 0

Answer:

Changes in Properties Changes in properties result when new substances form. For instance, gas production, formation of a precipitate, and a color change are all possible evidence that a chemical reaction has taken place. ... Change in Color A color change can signal that a new substance has formed.

Explanation:

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Positive and negative
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4. Explain how radioactive isotopes are used to detect health problems.
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Radioisotopes are widely used to diagnose disease and as effective treatment tools. For diagnosis, the isotope is administered and then located in the body using a scanner of some sort.
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3 years ago
TWO QUESTIONS! NEED HELP PLEASEEE
castortr0y [4]

First question I believe is B

The second one is also B

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8 0
3 years ago
What will have the slowest onset time in an allergic reaction: injected, ingested, inhaled, touch. Why?
Sever21 [200]

Inhaled allergies will have the slowest onset time in an allergic reaction.

Inhaled allergies are also known as delayed-type hypersensitivity of allergic reactions because they occur after at least 24 hours of exposure to an allergen.

These reactions usually occur 48 to 72 hours or more to get exposure after contact with the allergen. Respiratory allergies are the most common type of allergy. Symptoms may include:

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Many people with inhaled allergies only have symptoms at certain times of the year. Pollen, grass, and mold are the most common triggers for seasonal allergies.  

Many types of airborne allergens are prevalent indoors.  

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Many long-term infectious diseases, such as tuberculosis and fungal infections are its examples.

Learn more about Inhaled allergies here : brainly.com/question/7290086

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5 0
1 year ago
Name three pyical features for the sun
torisob [31]
Size

The Sun is 1,390,000 km in diameter. That compares with 12,756 km for diameter of the Earth. In other words, the diameter of the Sun is over 100 times the diameter of the Earth.

In June, 2004, Venus passed in front of the Sun, as seen from the Earth. Since the diameter of Venus is only slightly less than that of Earth (12,104 km)

Mass

The mass of the Sun is about 2 x 1030 kilograms (2 followed by 30 zeros). It is one of the larger stars in our Milky Way galaxy. The median size of stars in our galaxy is less than half the mass of the Sun. In comparison, the Earth is 6 x 1024 kg. This means that the mass of the Sun is over 300,000 times greater than that of the Earth.



other than its Big,Orangish-yellowish, round like a ball, and extremly hot

5 0
3 years ago
Read 2 more answers
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