Is this true or false? :D

Answer:

0.835 Kg

Explanation:

We'll begin by calculating the number of mole of oxygen that will fill 585 L tank at STP. This can be obtained as follow:

1 mole of oxygen (O2) occupies 22.4 L at STP.

Therefore, Xmol of oxygen will occupy 585 L tank at STP i.e

Xmol of oxygen = 585/22.4

Xmol of oxygen = 26.12 moles

Next, we shall determine the mass of 26.12 moles of oxygen. This can be obtained as follow:

Mole of O2 = 26.12 moles

Molar mass of O2 = 2 × 16 = 32 g/mol

Mass of O2 =?

Mole = mass /Molar mass

26.12 = mass of O2 /32

Cross multiply

Mass of O2 = 26.12 × 32

Mass of O2 = 835.84 g

Finally, we shall convert 835.84 g to Kg. This can be obtained as follow:

1000 g = 1 Kg

Therefore,

835.84 g = 835.84 g × 1 Kg / 1000 g

835.84 g = 0.835 Kg

Thus, 835.84 g is equivalent to 0.835 Kg.

Therefore, the mass of oxygen needed to fill the 585 L tank at STP is 0.835 Kg

Answer:

B. a covalent bond.

Answer:

If we subtract 13.4 from 27.6 we will get 14.2 g.

Explanation:

oh shi sorry I wish I could help but I'm stupid

Answer:

3056.25g

Explanation:

Problem here is to find the mass of Cu(NO₃)₂ to weigh out to make for the number of moles.

 Given;

Number of moles  = 16.3moles

Unknown:

Mass of Cu(NO₃)₂ = ?

Solution:

To find the mass of Cu(NO₃)₂, use the expression below;

    Mass of Cu(NO₃)₂ = number of moles x molar mass

Let's find the molar mass;

  Cu(NO₃)₂ = 63.5 + 2[14 + 3(16)]

                    = 63.5 + 2(62)

                    = 187.5g/mol

Mass of  Cu(NO₃)₂ = 16.3 x 187.5  = 3056.25g

Answer:

a is the peak/ crest

b is the through

c is the amplitude

d is the wavelength

Answer:

Answer choice B. It is a spiral Galaxy

Answer:

25 km per hour

Explanation:

50/2=25

Answer:

ang hirap na nag tanung

Answer:

metal calcium or (Ca).

Explanation:

For example, the metal calcium (Ca) and the nonmetal chlorine (Cl) form the ionic compound calcium chloride (CaCl2). In this compound, there are two negative chloride ions for each positive calcium ion

Answer:

Explanation:

Answer:

See explanation and image attached

Explanation:

Now let us consider the reaction closely, The reaction of (R)-2-chloro-3-methylbutane with sodium iodide is an SN2 reaction that occurs with inversion of stereochemistry.

When the OH^- is used, the reaction proceeds by E2 elimination giving the alkene product as shown in the image attached to this answer.

The reaction of a five-carbon alkanol and an acid to form an ester is also shown in the image attached to this answer.

To prepare an ester. the glassware must first be dried. The alkanol and alkanoic acid are added and refluxed in a magnetic stirrer and conc H2SO4 is added. A thermometer should be present in the set up. The refluxing should continue for about 60 minutes.

Answer:

27 %

Explanation:

Step 1: Given data

Step 2: Calculate the mass of the solution

The mass of the solution is equal to the sum of the mass of the solute and the mass of the solvent.

m = 27 g + 74 g = 101 g

Step 3: Calculate the mass percentage of this barium chloride in this solution

We will use the following expression.

%m/m = mass of barium chloride / mass of solution × 100%

%m/m = 27 g / 101 g × 100%

%m/m = 27 %

Answer:kingdom 1 i think

Explanation:

Answer:

yesssssssssss

Explanation:

Answer:

3 bonds are needed.

Explanation:

The electrons that are involved in chemical bonding are those in the outer shell of the highest energy level of the atom. The electron configuration of nitrogen (N) is 1s²2s²2p³. That means thy at each nitrogen atom has 5 valence electrons: 2 electrons in the 2s orbital and 3 electrons in the 2p orbital. To fullfil the octet, each nitrogen atom needs 3 electrons. So, they can share each other 3 electrons to form 3 simple bonds. Therefore, the nitrogen molecule (N₂) has 3 bonds involving 6 bonding electrons or a triple bond.

Answer:

4

Explanation:

Carbon tetrahydride is better known as methane.

Methane is an alkane with a chemical formula CH₄. It is a gaseous organic compound.

Answer:

Law of position

Explanation:

Answer:

Law of Superposition

Explanation:

"A major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence."

Answer:

SeF4 is a polar molecule

Explanation:

SeF4 is a polar molecule because a polar molecule is any molecule that have lone pairs of electrons in the central atom or have atoms that are electronegative and the electrons between that are covalently bonded are not evenly distributed.

The electronegative atoms of flourine in SeF4 are not evenly distributed and kind pairs of electrons are on the central atom.

Answer:

Which best describes a codon? 1. a cell structure that gives the master instructions for an organism 2. a segment of DNA that is the basis of heredity in organisms 3. the sequence of three bases that codes for a specific amino acid 4. the basic unit of structure and function of all living things

Answer:

The Correct answer is C

Explanation:

The sequence of three bases which codes for a specified amino acid.

Answer:

D. both use a strong, non-nucleophilic base such as LDA and use a low temperature.

Explanation:

The more stable enolate is the thermodynamic enolate, and a less stable is known as the kinetic enolate.

The less stable enolate has a less substituted product, while the more stable product has a more substituted product.

Now, to form a kinetic enolate, we need to choose a strong, non-nucleophilic base such as LDA to attract hydrogen from the less substituted site. However, an increase in temperature results in an increase in a reaction, which leads to the formation of a stable product.

So, to form the kinetic enolate, a low temperature will be required.

Thus, To form a kinetic enolate, both use a strong, non-nucleophilic base such as LDA and use a low temperature.

Answer:

a. cis-4-methylcyclohexanol and sodium chloride

Explanation:

An SN2 reaction is a concerted mechanism of nucleophilic substitution of an alkyl halide in which there is inversion of configuration of the product.

This inversion of configuration occurs because the entering group attacks the substrate from the backside. In the transition state, both the leaving group and entering group are partially bonded to the substrate in the front and backsides respectively.

Hence, if we start with  trans-1-chloro-4-methylcyclohexane, we end up with a product of inverted configuration which is cis-4-methylcyclohexanol and sodium chloride as a byproduct.

Answer:

C) It allows your body time to rest.

Explanation:

Hope this helps!

Answer:

C.) It allows your body time to rest.

Explanation:

PLATO

Answer:

The correct answer is - solute.

Explanation:

A solute is one half of a solution that is dissolved in the other half of the solution, known as the solvent. Solute particles are always less or lower in quantity or concentration than the solvent in a solution.

In this case, coffee crystals are dissolved in hot water so the solute will be coffee crystals and the amount of coffee crystals are also less than the amount of solvent.

Answer:

solute

Explanation:

Answer:

Endangered. The meaning of endangered is when a species declines in number- this might be because they are being eaten by another animal which has a higher popupayion, or perhaps because they are being hunted by humans for their meat or fur. Neither reason might be that their food or habitat has been destroyed b humans to create land for farming or housing. one example of name endangered species is Polar Bears: they like in the Antarctic where there is no land, simply ice. Due to humans causing climate change, the world is warming up and the ice is melting. This means polar bears are dying out because it would be too tiring to swim to find ice. For the same reason, other animals are dying in the Antarctic meaning that Poplar Bears have less to eat (being at the top of the food chain -no animal eats polar bears).

Answer:

air

Explanation:

you would be going through air

If you were travelling outward from the earth in a space shuttle at an altitude of 88.4 km you would be in the air.

The height of a celestial object above the horizon, as opposed to its vertical elevation above the surface of a planet or natural satellite (such as the ocean or land).

Space grew taller, height is the perpendicular elevation of an object over its base, the ground, a specific level, or one object over another. For example, the altitude of a mountain or a bird above a tree's top are examples of height.

A triangle's altitude is determined by drawing a perpendicular line from its vertex to its opposite side. The altitude, sometimes referred to as the triangle's height, forms a right-angle triangle with the base.

Thus, when travelling outward from the earth in a space shuttle at an altitude of 88.4 km you would be in the air.

To learn more about altitude refer the link below;

https://brainly.com/question/4390102

#SPJ2

Explanation:

Its a particle that can come from loads of things like mass for example, or gas, liquid or solid