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3 years ago

Object A: has a mass of 2g a volume of .5L

1 answer:

8 0

An object will be floating in water if the density is lower and will be sink if the density is higher. Water density would be 1000g/liter or 1g/ml. To determine whether the object float or sink you need to calculate both object density.

The density of object A would be: 2g/ 0.5liter= 4g/liter
The density of object B would be: 3g/ 5liter= 0.6g/liter

It is clear that the object is much lighter than water so both objects would float.

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Write a report on waves

Bad White [126]

Answer:

The epic emotional journey of a suburban African American family as they navigate love, forgiveness and coming together in the wake of a tragic loss.

Explanation:

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2 years ago

Which compound is classified as a hydrocarbon?

Andrej [43]

(2) butynu........................

5 0

3 years ago

Read 2 more answers

For 2Na (s) + Cl2(g) - 2NaCI (s) ,how many grams of sodium Chloride will be made from 115 g of sodium metal when reacted with ex

Solnce55 [7]

Given:

Mass of Na = 115 g

Excess Cl2

To determine:

Mass of NaCl produced

Explanation:

Given reaction is-

2Na(s) + Cl2(g) → 2NaCl(s)

Since Cl2 is in excess, Na will be the limiting reagent

As per the reaction stoichiometry Na:NaCl = 1:1

i.e. moles of Na reacted = moles of NaCl formed

Now, # moles of Na = mass of Na/atomic mass

= 115 g/23 g.mol-1 = 5 moles

Therefore, moles of NaCl = 5

Molar mass of NaCl = 58 g/mol

Mass of NaCl = 5 moles * 58 g.mol-1 = 290 g

Ans: Amount of Nacl produced = 290 g

5 0

3 years ago

There are three major isotopes of silicon: silicon-28, silicon-29, and silicon-30. Given the average atomic mass of silicon is 2

bulgar [2K]

Answer:

Silicon-28

Explanation:

To estimate the isotope with the highest percentage of abundance, we look at which of the isotopes have the closest resemblance to the value of the final atomic mass.

From what is given, it can be observed that the isotope with the highest value is that of the 28 because it can be seen that it is large enough to have affected the value of the isotope near it.

4 0

3 years ago

A new element X is found and in the sample 70% has a mass number of 43, 25% is X-44, & 5% is X-47. What is the (average) ato

Semenov [28]

The average atomic mass of this new element X is 43.45

HOW TO CALCULATE AVERAGE ATOMIC MASS:

The average atomic mass of an element can be calculated by the following steps:

multiplying the atomic mass of each isotope with its relative abundance
Then sum the results for each isotope

According to this question; a new element X is found and in the sample:

70% is X-43
25% is X-44
5% is X-47

The average atomic mass of element X is calculated thus:

X-43: 70/100 × 43 = 30.1

X-44: 25/100 × 44 = 11

X-47: 5/100 × 47 = 2.35

Next, we sum the results as follows:

= 30.1 + 11 + 2.35

= 43.45

Therefore, the average atomic mass of this new element X is 43.45.

Learn more: brainly.com/question/13753702?referrer=searchResults

6 0

3 years ago