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4 years ago

Cereal is an example of what type of matter?

Chemistry

2 answers:

BARSIC [14]4 years ago

6 0

Cereal is an example of heterogeneous mixture since you can separate the pieces by either color, size, shape, etc..

Elena L [17]4 years ago

5 0

A heterogeneous mixture since you can separate the ingredients that make it up.

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what is the chemical reaction in which the exchange of electropositive and electronegative ions occurs in aqueous solution

defon

Answer:

chemical reaction are the processes in which new substances with new properties of from are called as chemical reaction ex double displacement reaction

Explanation:

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3 years ago

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While following the Dumas method, a student assumes that the contents of the container are the same temperature as the water bat

Nataliya [291]

Answer:

Explanation:

the Molar mass will be smaller as the content of the container is not directly proportional to the temperature of the water bath.

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3 years ago

Which statement best describes the properties of sucrose?

crimeas [40]

Answer:

D. They are different from the properties of carbon, oxygen, and hydrogen.

Step-by-step explanation:

Carbon, oxygen, and hydrogen are all elements.

Sucrose is a compound containing carbon, oxygen, and hydrogen. Its properties are different from those of its elements.

For example, carbon is a black solid, while oxygen and hydrogen are colourless gases. Sucrose is a white solid.

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3 years ago

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A scientist digs up sample of arctic ice that is 458,000 years old. He takes it to his lab and finds that it contains 1.675 gram

Fiesta28 [93]

Answer:

6.70 grams of krypton-81 was present when the ice first formed

Explanation:

Let use the below formula to find the amount of sample

$N= N_0(\frac{1}{2})^n$

where

$n = \frac{t}{t_{\frac{1}{2}}}$

here

t = 458,000 years

$t_{\frac{1}{2}}$ = 229,000

$\frac{t}{t_{\frac{1}{2}}}$ = \ $\frac{ 458,000}{229,000}$

n = $\frac{t}{t_{\frac{1}{2}}}$ = 2.000

Now substituting the values

$1.675 = N_0(\frac{1}{2})^{2.000}}$

$1.675 = N_0\times (0.2500)$

$N_0= \frac{1.675}{0.2500}$

$N_0=6.70$

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3 years ago

What is the composition of the nuclei modeled by these symbols? How many protons and neutrons?

gayaneshka [121]

There are six protons and eight neutrons present in the carbon atom as shown.

<h3>What is the nucleus?</h3>

The nucleus of an atom consists of its protons and its neutrons. The protons are positively charged while the neutrons have no charge.

From the symbol of the element as shown in the question, we can see that there are six protons and eight neutrons present.

Learn more about nucleus of atoms:brainly.com/question/10658589

#SPJ1

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2 years ago