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3 years ago

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Oceń prawdziwość podanych informacji w układzie okresowym pierwiastki chemiczne są złożone według NIK to jących się liczbą atomo

wych Z Jądro atomowe jest bardzo mały i leży

1 answer:

cluponka [151]3 years ago

3 0

Wow. What language is this?

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No one believed him b/c he had no

Rainbow [258]

Answer:

Chicken nuggets

hope it helps have a nice day

6 0

2 years ago

Read 2 more answers

Which of the following represents the smallest mass? I.) 23 cg II.) 2.3 x 10-3 μg III.) 0.23 mg IV.) 0.23 g V.) 2.3 x 10-2 kg

jenyasd209 [6]

The smallest mass among the choices is Choice (ii):2.3 x 10-3 μg

This is so because, the prefix μ signifies a factor of 10^-6.

For choice I:

23 cg means 23 centigrams

In essence = 0.23grams

For choice II:

2.3 × 10-3 μg means 2.3 × 10-9 grams

For choice III:

0.23 mg means 0.23 × 10-3 grams

For choice IV:

0.23 grams simply means 0.23grams

For choice V:

2.3 × 10-2 kg means 23 grams

Ultimately, Choice II represents the smallest mass.

Read more;

brainly.com/question/17192728

7 0

2 years ago

An 8 oz. bottle of energy drink contains 6.0 g of protein, 2.0 g of fat, and 16.3 g of carbohydrate. The fuel value of this ener

valina [46]

<u>Answer:</u> The correct option is d) 460 kJ

<u>Explanation:</u>

We are given:

Content of fat in energy drink = 2.0 g

Content of protein in energy drink = 6.0 g

Content of carbohydrate in energy drink = 16.3 g

Also,

The fuel value of fat = 38 kJ/g

The fuel value of protein = 17 kJ/g

The fuel value of carbohydrate = 17 kJ/g

So, the fuel value of the energy drink will be:

Total fuel value = $(2.0g\times 38 kJ/g)+(6.0g\times 17 kJ/g)+(16.3g\times 17 kJ/g)$

Total fuel value = $[76+102+277]=460kJ$

Hence, the correct option is d) 460 kJ

4 0

3 years ago

How old was the oldest animal fossil <br>help thx

JulijaS [17]

Answer:

the Rhyniognatha hirsti

Explanation:

at age 400 million years old

5 0

3 years ago

State the guideline you can use to predict the formula of:

Cerrena [4.2K]

We can predict formula of ionic compounds by:

Take a look at where the elements are listed on the periodic table.
The amount of electrons that an element would need to gain or lose in order to resemble an atom of a nearby noble gas is one of the similarities that atoms in the same column as one another (group) tend to display.
Alkali metal group I ions have +1 charges.
Alkaline earth metals (group 2 ions) have a +2 charge.
Nonmetal group 6 ions have a charge of -2.
Halides in group 7 have a -1 charge.
The charges of the transition metals cannot be predicted in a straightforward manner.
Check out a table of charges (valences) to see potential values. The +1, +2, and +3 charges are most frequently employed in beginning and general chemistry courses.
Keep in mind that the positive ion is always stated first when writing an ionic compound's formula.

These are the few guidelines we can use to product formula.

Learn more about ionic compounds here:

brainly.com/question/2687188

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4 0

1 year ago