Pls help me on this question????

Answer:

the definition is : a compound or ionic species which can donate an electron pair to an acceptor compound.

so as far as i know i know the answer is: a substance that accepts electrons to form a covalent bond.

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Explanation:

The definition of a Lewis base is: C. a substance that accepts electrons to form a covalent bond.

What is a Lewis base?

A Lewis base can be defined as a specie of an ionic or chemical compound that contains an empty orbital which allows it to donate an electron pair (two or more electrons) to form a covalent bond.

This ultimately implies that, a Lewis base is a chemical substance that accepts an electron pair (two or more electrons) to form a covalent bond.

In Chemistry, some examples of a Lewis base include the following:

Read more on Lewis base here: https://brainly.com/question/3655338

Answer:

Partial pressure

Explanation:

the scientists is measuring different pressure, so it would be partial pressure. Hope that this helps you and have a great day :)

Answer:

No

Explanation:

It is one of those harsh realities that no matter how hard we try to connect people to their roots aka make them understand that everything is interconnected like the breathe you throw out is used by plants in photosynthesis, the O2 plants give is used by us. Living beings and Non-living beings are all connected and most humans know about this. But, when it comes time for earning the $$$, people's judgements are often clouded by their greed hence no matter how hard we try to make people understand we are all connected and that they should take care of the environment more, they will likely treat the environment as they always have been: to serve their financial and selfish needs.

TLDR: People are selfish hence probably will not treat environment with more care even if we educate them about our interconnectedness.

Answer:

The correct answer is 399.8 ppm

Explanation:

A concentration in parts per million (ppm) is equal to:

[tex]1 ppm = \frac{1 g solute}{10^{6}g solution}= \frac{1 mg solute}{1 kg solution}[/tex]

Solute: Cd; Mass = 180 mg x (1 g/1000 mg) = 0.18 g

Solvent: Water ; Mass= 450.0 g x (1 kg/1000 g) = 0.45 kg

We have the following total mass of solution:

Mass of solution = Mass of solute + Mass of solvent = 0.18 g + 450 g = 450.18 g = 0.45018 kg

Finally, we divide the mass of solute (in mg) into the mass of solution (in kg) to obtain the ppm (in mg/Kg):

ppm = 180 mg/0.45018 kg = 399.8 mg/Kg = 399.8 ppm

Answer:

6ppm

Explanation

We'll begin by calculating the concentration of the solution in mg/g. This is illustrated below:

Mass of iron = 4.5mg

Mass of water = 750g

Concentration in mg/g = 4.5/750 = 6×10¯³mg/g.

Now, we can obtain the concentration in ppm as follow:

1mg/g = 1000ppm

Therefore, 6×10¯³mg/g = 6×10¯³ x 1000 = 6ppm.

Answer: Nope

Explanation:

Oxidation occurs because an agent that causes the oxidation---the oxidizing agent---must itself get reduced

Answer: it would be too hot to live on and hard to get any oxygen from the ground because it doesn’t support life there.

Explanation:

science.

Answer:

On Mars, it is too cold to support life, the only existing water is at it's north and south pole in solid form (ice). It's atmosphere is about 100 times thinner than Earth's so it couldn't hold in any heat anyway.

Answer:

24 hours

Explanation:

Therefore we have 24 hours in a day

Answer:

D. 2.5 x 10 ^-14 Hz

Explanation:

Use wavelength formula: v = f x wavelength

Rearrange formula for frequency.

f = wavelength / v

f = 7.6 x 10 ^-6 / 3.00 x 10 ^8

f = 2.5 x 10^-14 Hz

Explanation:

this is the one i found.....

Answer:

1.Borate ions, provided by the borax (hydrous sodium borate), cause the vinyl molecules in the glue to form cross-linked bonds. The process of cross-linking continues to alter the physical properties of the polymer. As more and more bonds are formed, the characteristics of the polymer change.

2.

If we pull the ends of the roll quickly, it will break.

If we roll the slime into a ball and place it on top of the beaker it slowly flow down.

3.When you pull slowly, your slime will stretch. However if you pull quickly it will break. Slime will slowly flow making it seem like a liquid, but it can also bounce which makes it seem a bit like a solid.

4.If we roll the slime into a ball and place it on top of the beaker it slowly flow down. After 30 minutes, slime will settle and behave as a solid, because water evaporates.

5.Yes, the slime ball will be able to bounce.

6.High Density Polyethylene, HDPE : bottle caps, folding tables and chairs, food storage containers, plastic bags, water pipes for domestic water supply. MDPE : shrink film, carrier bags, screws and enclosures. Linear LDPE : toys, lids, buckets, containers, bubble wrap.

Explanation:

Answer:

GENOTYPE IS THE COLLECTION OF GENES RESPONSIBLE FOR THE VARIOUS GENETIC TRAITS OF A GIVEN ORGANISM

Answer:

A capital letter represents the dominant form of a gene (allele),

and a lowercase letter represents the recessive form of the gene (allele).

Hope this helps..

Answer:

694.2915 grams of potassium chlorate is needed to produce 8.50 mol of oxygen

Explanation:

It is possible to apply the following rule of three: if by stoichiometry 3 moles of O₂ are produced by 2 moles of KCIO₃, when reacting 8.5 moles of O₂, how many moles of KClO₃ are necessary?

[tex]moles of KClO_{3} =\frac{8.5moles of O_{2}*2moles of KClO_{3} }{3moles of O_{2}}[/tex]

moles of KClO₃= 5.67

To know the amount of mass present in 5.67 moles of the compound, it is necessary to know the molar mass, that is, the amount of mass that a substance contains in one mole. Being:

The molar mass of the compound is:

KClO₃= 39 g/mole + 35.45 g/mole + 3* (16 g/mole)= 122.45 g/mole

Then you can apply the following rule of three: if in 1 mole of the compound there are 122.45 grams, in 5.67 moles how much mass is there?

[tex]mass=\frac{5.67 moles*122.45 grams}{1 mole}[/tex]

mass= 694.2915 grams

694.2915 grams of potassium chlorate is needed to produce 8.50 mol of oxygen

Answer:

b

Explanation:

ape ex

During cellular respiration, the first step is the breakdown of food molecules, such as glucose, into smaller organic molecules, specifically in a process called glycolysis. This process occurs in the cytoplasm of the cell and does not require oxygen. The breakdown of glucose results in the formation of two molecules of pyruvate.

After glycolysis, depending on the availability of oxygen, further steps of cellular respiration occur. If oxygen is available, the pyruvate molecules enter the mitochondria, where they undergo further breakdown through processes like the Krebs cycle and oxidative phosphorylation, resulting in the production of ATP (adenosine triphosphate), which is the primary energy currency of the cell.

Therefore, option B, the breakdown of food molecules into smaller organic molecules, is the first step in cellular respiration.

Learn more about glycolysis here:

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#SPJ 2

Answer:

C

Explanation:

C is the correct answer to this question.

One parent is homozygous and has brown fur...

Hope this helps.

Part B is the correct answer.

When base and acid react, the result is salt and water.

Therefore....

Base+acid = salt+water

Answer:

Option A, The organism experiences a disruption in homeostasis.

Explanation:

When a pathogen enters the organism’s body, it disrupts its homeostasis. There are several receptors in the body that are responsible for maintaining the stability of the body through negative feedback loop.  

A foreign element attaches to the surface of these receptors and hence disrupts their attachment with the probable substance necessary for the regulation of essential body function.

Thus, the temperature regulation get s impaired, hormonal imbalances occur, feeding system disturbs etc.

Hence, option A is correct

Answer:

gullies

rills

tributaries

Are the correct answers!!

Explanation:

A gully is a landform created by running water, eroding sharply into soil, typically on a hillside.

A rill is a shallow channel cut into soil by the erosive action of flowing water.

A tributary is a stream or river that flows into and joins a main river.

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Answer:The substance is Biodegradable

Explanation:

When something is biodegradable it can be broken down by organical processes or decomposers.

Answer:

Yes, it's A) True

Answer:

3

Explanation:

1 3 3 3 is the order of the choose

Answer: about 14

Explanation:

Answer:

D: Metal

Explanation:

Most conductors are made from metal, for the alloys allow for a "freer" passage way for electrons to pass through.

~

Answer:

D. Metal

Explanation:

hopeee thisss helpss

Answer:

D.

Explanation:

The sun makes the land warm, while the water stays colder. This make the warm air rise off the ground and causes the cool are to replace it (making it come from the ocean)

Answer:

Insect and wind are the correct answer

Explanation:

Just took the test on USA Test Prep

Answer: Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 16 upper S plus superscript 0 subscript negative 1 e.

Explanation:

Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as -decay. In this the mass number remains same but the atomic number is increased by 1.

The general representation of beta minus emission is :

[tex]_A^Z\textrm{X}\rightarrow _{A+1}^Z\textrm{Y}+_{-1}^0e[/tex]

The representation of beta decay of phosphorous- 32 :

[tex]_{15}^{32}\textrm{P}\rightarrow _{16}^{32}\textrm{S}+_{-1}^0e[/tex]

Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 16 upper S plus superscript 0 subscript negative 1 e.

Answer:

C

Explanation:

Answer:

The answer is A and B.

Explanation:

Using Reactivity Series .

Answer:

B

Explanation:

Think about the molar masses of each.

O2 -> 32 g

So 32 g = 1 mol.

Pb -> 207.2 g

So 103.6 g = .5 mol!

H2O -> 18 g

So 36 g = 2 mol.

CO2 -> 44 g

So 14 g = .3 mol