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8090 [49]
3 years ago
6

Malia is interested in observing cognitive development in children and wants to design a study that will allow her to observe sm

all changes in how 6-year-olds learn to solve problems. She plans to collect data from each child every week for three months.
Which design is her best choice?

A] microgenetic
B] cross-sequential
C] cross-sectional
D] longitudinal
Chemistry
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer: Microgenetic

Explanation: I just took the test :3

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Hi , I’m really sorry because I just have the first question... so here it is :

So it is 0.52 mol .

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2 years ago
What elements are highlighted:<br> a. Nonmetals<br> b. Metals<br> C. Metalloids
Advocard [28]
Non metals
(It’s both halogens and noble gases ) the other ones which are white(not highlighted) are alkali metals, alkaline earth metals, and transition metals :3
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4. Write a chemical formula for a compound that has two atoms of oxygen (0) and
Katyanochek1 [597]
The answer is Fe3O2 because there’s 2 oxygen and 3 iron
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There are two open cans of soda on the table. One can was just taken from the refrigerator and the other was taken from the cupb
nika2105 [10]
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Read 2 more answers
Isotopes of carbon differ with the respect to the number of
hodyreva [135]

Answer:

Neutrons.

Explanation:

Isotopes can be defined as the atom of an element that has the same number of protons but different number of neutrons. This ultimately implies that, the isotopes of an element have the same atomic number (number of protons) but different atomic mass (number of nucleons).

The isotope of an element is denoted by X^{A}_{Z}

Where; X is the symbol of the element.

A is the atomic mass or number of nucleons.

Z is the atomic number or number of protons.

<em>Therefore, the number of neutrons = A - Z</em>

<em>Isotopes of carbon differ with respect to the number of neutrons.</em>

<em>Basically, there are three (3) Isotopes of Carbon and these are;</em>

<em>1. Carbon-12: it has an atomic mass of 12 with 6 numbers of proton and neutron respectively. </em>

<em>2. Carbon-13: it has an atomic mass of 13 with 6 numbers of proton and 7 numbers of neutron. </em>

<em>3. Carbon-14: it has an atomic mass of 14 with 6 numbers of proton and 8 numbers of neutron.  </em>

8 0
3 years ago
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