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9 months ago

The mass of an object is 500.25g and its volume is 10.05cm³. What is its density?

Chemistry

1 answer:

harkovskaia [24]9 months ago

5 0

Hello the density is 49.78 g/cm^3 of the object

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Is iron a compound yes or no

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Answer:

No, iron is not

Explanation:

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3 years ago

24. Element X has five valence electrons, element Y has one valence electron, and element Z has one valence electron. Which two

natka813 [3]

Elements Y and elements Z would have similar properties due to the fact that they both posses the same number of valence electrons. They both have a single valence electron that determines the corresponding elements bonding properties and the fact that it can either donate 1 valence electron to produce an ion that would be attracted to another atom, that is also an ion. Assuming that these elements are group 1 elements, they do not undergo in covalent bonding.

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3 years ago

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1) What mass of Na2CO3 is required to make 50cc of its seminormal solution?

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Answer:

$m=1.325gNa_2CO_3$

Explanation:

Hello,

In this case, by considering the given seminormal solution, we infer it is a 0.5-N solution which means that we can obtain the equivalent grams as shown below for the 55 cc (0.055 L) volume:

$eq-g=0.5eq-g/L*0.050L=0.025eq-g$

Next, since sodium carbonate has two sodium ions with a +1 oxidation state each, we can obtain the moles:

$mol=0.025eq-gNa_2CO_3*\frac{1molNa_2CO_3}{2eq-gNa_2CO_3}\\ \\mol=0.0125molNa_2CO_3$

Finally, the mass is computed by using its molar mass (106 g/mol)

$m=0.0125molNa_2CO_3*\frac{106gNa_2CO_3}{1molNa_2CO_3} \\\\m=1.325gNa_2CO_3$

Regards.

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3 years ago

Obtain a box of breakfast cereal and read the list of ingredients. What are four chemicals from the list? a. monoglycerides b. c

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Answer:

B. cocamide DEA

C. folic acid

D. iron

G. lauryl glucoside

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3 years ago

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Greater absolute charge
- This is because ionic bond results from stronger electrostatic forces of attraction.
- The higher the value of charges q₁ and q₂ the stronger will be the ionic bond.

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3 years ago

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