Ask question

Ask question

All categories

2 days ago

15

A bluebird lives in a maple tree. It builds a nest in the tree, where its eggs can be protected from the harsh environment. This

is an example of:

1 answer:

Alekssandra [2.6K]2 days ago

4 0

Answer:

commensalism

(I hope I got that spelling correct)

Explanation:

when the bird only uses the tree for nesting and

the tree remains unaffected or unbothered by the bird's presence.

You might be interested in

doctor has ordered that a patient be given 20 g of glucose, which is available in a concentration of 70.00 g glucose/1000.0 mL o

lions [2633]

The patient needs to receive 285.71 ml.
1000 ml contains 70 gr of glucose.
x contains 20 gr of glucose.

x=1000*20/70

8 0

9 days ago

A 10.00 g sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 g BaSO4 (M- 233.4). W

eduard [2509]

Answer:

The salt identified is barium chloride.

Explanation:

$BaX_2++Na_2SO_4\rightarrow BaSO_4+2NaX$

The moles of barium sulfate produced are $\frac{11.21 g}{233.38 g/mol}=0.0480 mol$

per the reaction, 1 mole of barium sulfate arises from 1 mole of $BaX_2$ .

Therefore, 0.0480 moles result from:

$\frac{1}{1}\times 0.0480 mol=0.0480 mol$ of $BaX_2$ .

The quantity of $BaX_2$ used amounts to 10.00 g

Moles of $BaX_2$ = \frac{10.00 g}{\text{Molar mass}}[/tex]

$0.0480 mol=\frac{10.00}{\text{Molar mass}}$

The molar mass of $BaX_2$ is 208.33 g/mol

The closest answer to our calculation is $BaCl_2=208.2 g/mol$ .

The correct identification is barium chloride, which has a molar mass of 208.2 g/mol.

8 0

11 days ago

65g of nitric acid are produced in a reaction. 2.5g of platinum are added to the reaction vessel at the start of the reaction to

alisha [2704]

Answer:

2.5 g of platinum

Explanation:

A catalyst is a substance added to a reaction to enhance the reaction speed. It does not undergo any change during the reaction, meaning it remains unchanged after the reaction concludes. The role of a catalyst is to provide an alternative pathway for the reaction by reducing the activation energy required. Therefore, a catalyzed reaction occurs more rapidly and requires less energy compared to an uncatalyzed one.

Since catalysts do not get involved in reactions and retain their mass post-reaction, the amount of platinum will stay the same (2.5g). The mass can only alter if a substance participates in the chemical process. Thus, this is the response.

6 0

1 month ago

How much volume (in cm3) is gained by a person who gains 11.1 lbs of pure fat?

Anarel [2593]

The density of human fat is $0.918 g/cm^{3}$ . The mass of the pure fat is 11.1 lbs.

First, convert the mass from pounds to grams as follows:

1 lb=453.592 g

Thus,

$11.1 lb\rightarrow 11.1\times 453.592 g=5034.875 g$

Density is defined as mass per unit volume, meaning volume can be calculated as:

$V=\frac{m}{d}$

By substituting the values,

$V=\frac{5034.875 g}{0.918 g/cm^{3}}=5484.61 cm^{3}$

Consequently, the volume gained by the individual will be $5484.61 cm^{3}$ .

6 0

1 month ago

(a) calculate the %ic of the interatomic bond for the intermetallic compound tial3. (b) on the basis of this result, what type o

Tems11 [2387]

Answer :

The percentage ionic character (%IC) equals 10%, indicating the bond is mostly covalent with slight polarity.

Percent Ionic Character:

This reflects the fraction of ionic nature within a polar covalent bond. The formula for %IC (% ionic character) is:

$Percent Ionic character = 1 - e^-^0^.^2^5 ^*^(^X^a^-^X^b^) * 100$

Here, Xa is the electronegativity of atom A and Xb is that of atom B.

Given: The compound is TiAl₃.

Electronegativity of Ti = 2.0

Electronegativity of Al = 1.6 (as shown in the provided image)

Substitute these values into the formula:

$Percent Ionic character = 1 - e^-^0^.^2^5 ^*^(^2^.^0^-^1^.^6^) * 100$

$Percent Ionic character = 1 - e^(^-^0^.^2^5 ^*^0^.^4^) * 100$

$Percent Ionic character = 1 - e^(^-^0^.^1^) * 100$

The value of e⁻¹ equals 0.90.

Therefore, percent ionic character = (1 - 0.90) × 100

Percent Ionic Character = 10%

Because the % IC is only 10%, which is relatively low, the bond is classified as covalent with minimal polarity.

8 0

1 month ago