Please help due today

Answer:

The picteure isnt lodeing

Explanation:

mark brainly

Answer:

true

Explanation:

we have many sattelites that are seen by many astounouts in space by telescope but more than half space is not discoverd

Explanation:

To solve this problem, we simply use the periodic table of elements which groups elements based on their atomic numbers.

The atomic number of an element is the number of protons it contains. The protons are the positively charged particles within an atom.

Now;

Noble gases  belongs to group 18

Alkali earth metals belongs to group 2

Halogens belongs to group  17

Alkali metals belongs to group 1

Transition metals belongs to group 3-12

Answer:

false

Explanation:

Craters on the Moon are caused by asteroids and meteorites colliding with the lunar surface. The Moon's surface is covered with thousands of craters. ... It also has very little geologic activity (like volcanoes) or weathering (from wind or rain) so craters remain intact from billions of years.

Answer: Potassium perchlorate

Explanation:

Answer:

The answer would be C

Explanation:

I got it right on E D G E N U I T Y

2021

Answer:

D. A force acting between the atoms within a molecule.

Answer:

Use them as nutrients probably

Answer:

hope this helps you

Explanation:

Example 1: A 20 kg object has a velocity of 4.5 m/s in the positive x direction. ... What is the momentum of a 3000 kg truck traveling at 25 m/s? 2. A 1500 kg ferryboat has a momentum of 25000 kg∙m/s. ... *A 0.01 kg bullet has a speed of 700 m/s before it strikes a 0.95 kg wooden block ... We will be going outside so please.

Answer:

Nitrogen is the answer

Given :

A chemical equation :

H₂O₂ → H₂O + O₂

Solution :

We can see that there are 2 oxygen atoms in LHS and 3 on RHS .

So, we can reduce the oxygen atoms to two in THS by just dividing it by 2.

H₂O₂ → H₂O + [tex]\dfrac{1}{2}[/tex]O₂

Now, multiplying both sides by 2, we get :

2H₂O₂ → 2H₂O + O₂

Therefore, the balanced chemical equation is 2H₂O₂ → 2H₂O + O₂ .

Answer:

The volume in milliliters is 250mL

Explanation:

The volume of a rectangle is obtained using the equation:

Volume = Length * Width * Height

In the problem, we can take length as 5cm, width as 5cm and height as 10cm. Thus, volume of the rectangular box is:

Volume = 5cm * 5cm * 10cm

Volume = 250cm³

1mL = 1cm³.

That means the volume in milliliters is 250mL

Answer:

OB sunlight

Explanation:

it grows with it

Freezing is the physical change of matter where the solids are formed from the liquids. Freezing point change is described as melting point change. Hence, option B is correct.

Temperature is the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius. The freezing point is the temperature at which the vapor pressure of the liquid solvent becomes similar to the vapor pressure of the solid-liquid.

Melting is equivalent to freezing: a temperature when a solid becomes a liquid. Melting and freezing are the two contradicting changes in the phase of matter that involves the solids and the liquids phases. The melting points are higher than the freezing points.

Hence, option B. the melting point change is the correct option.

Learn more about temperature here:

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Answer:

[tex]\boxed {\boxed {\sf About \ 2.23 \ moles \ CH_4}}[/tex]

Explanation:

First, find the molar mass of CH₄

This compound is made of carbon (C) and hydrogen (H). Look on the Peirodic Table for the masses of both elements.

Now, count the number of moles in the compound. There is no subscript on C, indicating 1 mole. There is a subscript of 4 on H, indicating 4 moles. We must multiply the molar mass of hydrogen by 4.

Add the 2 masses.

Next, find the number of moles in 35.7 grams.

Use the molar mass of CH₄ as a ratio.

[tex]\frac{16.043 \ g \ CH_4}{1 \ mol \ CH_4}[/tex]

Since we want the units of grams CH₄ to cancel when we multiply, we must flip the ratio.

[tex]\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}[/tex]

Multiply by 35.7 grams.

[tex]35.7 \ g \ CH_4 *\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}[/tex]

The grams of CH₄ will cancel each other out.  Since there is a 1 in the numerator, we can also move 35.7 to the numerator.

[tex]35.7 *\frac{1 \ mol \ CH_4}{16.043 }[/tex]

[tex]\frac{35.7 \ mol \ CH_4}{16.043}[/tex]

[tex]2.22526959 \ mol \ CH_4[/tex]

The original measurement given, 35.7 grams, has 3 significant figures (3, 5, and 7), so we must round to 3 sig figs.

For this number, it is the hundredth place.

The 5 in the thousandth place tells us to round the 2 to a 3.

[tex]2.23 \ mol \ CH_4[/tex]

There are about 2.23 moles of CH₄ in 35.7 grams.

Answer:

Often a chemist needs to heat materials. The Bunsen Burner is one of the most efficient ways of doing this.

Explanation:

Answer:

Q = 2232J

Explanation:

In the system, the energy that is lost by the iron is:

Q = S*ΔT*m

Where Q is heat, S is specific heat of iron ΔT is change in temperature and m is mass of the piece of iron.

S = 0.449J/gK

ΔT = 101.62°C - 25.68°C = 75.94°C

m = 65.454g

Q = 0.449J/gK*75.94°C*65.454g

Double Covalent Bond

Answer: The formula for boron phosphite  is  BP

Explanation:

The answer would be BP

Hope this helped!

Answer:

faules

Explanation:

truck it

Answer:

Explanation:

Explanation: NA,Avogadro's number specifies 6.0221×1023 individual particles. It is simply another collective number like a dozen, or a score, or a gross. NA has the property that 6.0221×1023 individual cobalt atoms has a mass of 58.93⋅g

Answer:

6.0221×1023

Explanation:

The statement that best describes how the ionic bond is formed is as follows:

Thus, the correct option for this question is D.

Ionic bonds may be defined as the type of chemical bond that significantly involves the electrostatic force of attraction between ions of opposite charges, or between two atoms with different electronegativities.

When ionic bonds are formed between atoms or ions, the metal loses electrons and acquires a positive charge over them. They are known as cations. While the non-metals accept those electrons and acquire a negative charge on them. They are known as anions.

Therefore, non-metals taking electrons from metals is one of the statements that best describes the formation of ionic bonds. Thus, the correct option for this question is D.

To learn more about Ionic bonds, refer to the link:

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Answer:

i think its yes

Explanation:

Answer: the answer is yes

Explanation: I know because I had it on my chemistry test yesterday