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2 years ago

Based on the experiment, do you think birds can just wash off the oil with water? Explain your answer.

Chemistry

2 answers:

ankoles [38]2 years ago

7 0

Answer:

Explanation:

as it would stay sticked on them forerver amd a time of 2 months it will kill them

lidiya [134]2 years ago

6 0

No because oil and water don’t mix because oil is insoluble so the water would just slip of the oil acting as a barrier therefore you cannot you need soap

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PLS HELP ASAP

LenaWriter [7]

Answer:

B) burning wood

Explanation:

6 0

3 years ago

Read 2 more answers

A colorless liquid has a molar mass of 60.01 g/mol. When the liquid was analyzed, it was 46.7% nitrogen and 53.3% oxygen. What i

MAXImum [283]

first we have to find the empirical formula of the compound

empirical formula is the simplest ratio of whole numbers of components making up a compound

for 100 g of the compound

N O

mass 46.7 g 53.3 g

number of 46.7 g/ 14 g/mol 53.3 g/ 16 g/mol

moles = 3.34 mol = 3.33 mol

divide by the least number of moles

3.34/3.33 = 1.00 3.33/ 3,33 = 1.00

therefore number of atoms are

N - 1

O - 1

empirical formula is - NO

mass of empirical unit - 14 g/mol + 16 g/mol = 30 g

molecular formula is actual composition of elements in the compound

molecular mass - 60.01 g/mol

number of empirical units = molecular mass / empirical unit mass

= 60.01 g/mol / 30 g = 2

there are 2 empirical units

2(NO)

molecular formula = N₂O₂

6 0

2 years ago

How many atoms are in 6.3 moles of lead

densk [106]

Answer:

3.79 x 10²⁴atoms

Explanation:

Given parameters:

Number moles of lead = 6.3moles

Unknown:

Number of atoms = ?

Solution:

To solve this problem,

1 mole of a substance contains 6.02 x 10²³ atoms

6.3 mole of Pb will contain 6.3 x 6.02 x 10²³ = 3.79 x 10²⁴atoms

4 0

3 years ago

Which og the following best describe your lungs?

jarptica [38.1K]

ambot unsa ang answr kay kamo ra naka sabot

6 0

3 years ago

Iodine-131 has a half life of 8.040 days how long will it take for a 40.0 grams sample of iodine 131 to decay to 0.75g

Thepotemich [5.8K]

Answer:

$t=46.13days$

Explanation:

Hello there!

In this case, since the radioactive decay is considered as first-order kinetic model, whereby the remaining mass of the radioactive material involves the initial one, the rate constant and elapsed time:

$A=Ao*exp(-kt)$

As we were not initially given the rate constant, we can use the half-life to calculate it as follows:

$k=\frac{ln(2)}{8.040days}=0.08621days^{-1}$

Thus, we can calculated the elapsed time for the given conditions to obtain:

$t=\frac{ln(0.75g/40.0g)}{-0.08621days^{-1} }\\\\t=46.13days$

Regards!

6 0

3 years ago