1.
Events in which molten rock spews out of
the mantle as ash, lava, and gases

Answer:

164.088 g/mol

Explanation: hope this helps

Answer:

Calcium nitrate

Explanation:

164.088 g/mol

give me the brainliest plss

Answer: Positive tropism, negative tropism

Explanation:

Stimulus can be define as external and internal agent which generate a response in an organism. If the growth and action is towards the stimulus it is called as positive tropism. If the growth and action is away from the stimulus it is called as negative tropism. Example, the growth of the stem towards the sunlight is called positive tropism whereas the growth of the root away from the sunlight is called negative tropism. Here, sunlight is the stimulus.

Answer:

The pressure of the gas is 224839.8 atm

Explanation:

As we know

PV = nRT

Substituting the given values, we get -

P * 1 L = 90.1 moles * 8.314 4621(75). J K−1 mol−1 * 300

P = 224839.8 atm

The pressure of the gas is 224839.8 atm

Answer:

[tex]from \: avogadros \: hypothesis \\ 1 \: mole \: of \: nitrogen \: reacts \: with \: 3 \: moles \: of \: hydrogen \\ 3 \: litres \: of \: nitrogen \: react \: with \: ( \frac{3 \times 3}{1} ) \\ 9 \: litres \: of \: hydrogen[/tex]

Answer:

the nucleus

Explanation:

He proposed that the mass of an atom is concentrated in the nucleus which occupies a small volume in the center .He added that the nucleus comprises the protons and neutrons.where the neutron had no charge while the protons had charge of +1

Answer:

the nucleus

Explanation:

Answer: B. Hydrogen Bonding

Explanation: I got it right on castle learning lol

There are different kinds of forces. The term that identifies a type of intermolecular force is hydrogen bonding.

The three known to be types of intermolecular interactions. They  are

Hydrogen bonding is known to be an intermolecular force that takes place between two molecules. That molecule is known to have a hydrogen atom be bonded to a nitrogen, oxygen, or fluorine atom.

Learn more about Bond from

https://brainly.com/question/1420470

Answer:

Molarity of a solution where one mole of NaOH is added to 2000mL of water is 0.0005

Explanation:

Molarity is the equal to number of moles of solute divided by total volume of solvent

Given -

Number of moles of solute i.e  NaOH = 1

Total volume of solvent i.e water = 2000 mL

Molarity [tex]\frac{1}{2000} = 0.0005[/tex]

Answer:

Formula: [tex]Velocity \: V = f \lambda \\ Solution: = 5 \times 0.8 \\ = 4 \: {ms}^{ - 1} [/tex]

Answer:

The first guy is correct. That's what I got too

Answer:

5ppm

Explanation:

there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth). So, 4. 1 part per million (ppm) for a 1g sample is 1 µg or .

I know you said no links, but this is a converter that explained it much better than I know how to

http://www.endmemo.com/sconvert/ppmug_g.php#:~:text=%C2%BB%20Microgram%2Fgram%20Conversions%3A&text=ug%2Fg%E2%86%94ppm%201%20ug%2Fg%20%3D%201%20ppm

heres a screenshot of the site (since i understand links are awful)

Answer:

B. Revolution is a planet's movement around the sun causing four seasons the occur. Rotation is the spinning of the planet on its axis causing day and night.

Answer:

C

Explanation:

Answer:

H₂

Explanation:

To solve this question we must find, as first, find the molar mass of the homonuclear diatomic gas using Graham's law. With the molar mass we can identify this gas

Graham's law:

[tex]\frac{V_a}{V_b} =\sqrt{\frac{m_B}{m_A} }[/tex]

Where V is the speed of the gases and m the molar mass of those:

As Va is 3.98 times Vb (And mB is molar mass of oxygen gas = 32g/mol)

[tex]3.98 =\sqrt{\frac{32g/mol}{m_A} }[/tex]

15.84 = 32g/mol / mA

mA = 2.02g/mol

As is a homonuclear diatomic gas, the molar mass of the atom is 1.01g/mol. Thus, the gas is:

Answer:

2.7 atm = 2052 torr

I hope this helps you.

Answer:

2052 torr

Explanation:

Multiply 2.7 atm by the conversion factor to torr which is 760 torr = 1 atm

Answer:

13.25 M

Explanation:

Molarity is moles over liters so simply plug your values in as such:

5.30 mol ÷ 0.400 L = 13.25 M

Answer:

Molality = 9.498 mol  k g − 1

Explanation:

A final way to express the concentration of a solution is by its molality. The molality ( m ) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0 mol of NaCl dissolved into 1.0 kg of water is a “one-molal” solution of sodium chloride.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI  

number of moles of KI = 9.49.8 g / 1.00 g  m o l − 1

number of moles of KI = 9.498 moles  

molality = 9.498 moles / 1kg  

molality = 9.498 mol  k g − 1

Answer:

A. L•atm/mol K

Explanation:

The ideal gas law equation is given as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant

T = temperature (K)

As rightly stated in this question, R is the ideal gas constant, which can be different depending on the unit of the other components.

At STP;

V = 22.4L

P = 1 atm

T = 273 K

n = 1 mole

Hence, using PV = nRT

R = PV/nT

R = 1 × 22.4/1 × 273

R = 22.4/273

R = 0.08205

Approximately, R = 0.0821

With the units of P as atm, V as L, n as mol and T as K; R will be 0.0821 L•atm/mol K

H3PO4 + Ba(OH)2 --> Ba3(PO4)2 + H2O

so, (A) H2O + Ba3(PO4)2 is your answer.

Answer:

Graphene is made of pure carbon.

Explanation:

It is a material in which the carbon atoms are arranged in a single layer, creating a honeycomb pattern. It should be stressed that this layer of carbon is only one atom thick, although some authors consider up to ten layers of carbon to be graphene.

please mark me brainliest

Answer:

B, C

Explanation:

Hope it helps i read it all

Answer:

Explanation:

Heat and temperature are two different but closely related concepts. Note that they have different units: temperature typically has units of degrees Celsius ( ∘ C ^\circ\text C ∘Cdegrees, start text, C, end text) or Kelvin ( Kstart text, K, end text), and heat has units of energy, Joules ( Jstart text, J, end text).

Answer:

the volume is 18.45 L

Explanation:

The computation of the volume when the temperature is increased to 60.0 K is shown below:

Since the gas occupied 12.3 L at a temperature of 40.0 k

And, the volume when the new temperature is 60.0 k

So, the volume is

= 60.0 k × 12.3 L ÷ 40.0 k

= 18.45 L

hence,  the volume is 18.45 L

Answer:

The raindrops of mass 0.050g has 0.0028 moles of water

Answer:133.4

c

m

3

Explanation: Explanation:

Molarity is number of moles of solute divided by number of litres of solution.

M

=

n

V

Rearrange for V to give

V

=

n

M

Number of moles of KCl is the mass divided by the molar mass of KCl which is 75.5 g/mol, so (5/75.5) = 0.0667 moles.

Now plug in the numbers:

V

=

n

m

=

0.0667

0.5

=

0.1334

litres

So you need to add 0.1334 litres of 133.4

c

m

3

of water.

(NB: symbol for molarity is upper case M. m is metres).

Answer: A buffer solution is a solution made to prevent the pH level of something from changing when you add a base or an acid to it. For example, if you put a buffer solution in a pool, and then you put chlorine in it, the chlorine's effect on the PH level will be suppressed.

Answer:

The first one is balanced. The second one is not.

Explanation:

The first one is balanced because there are the same amount of elements on the reactant side as there are on the product side. The second one is not balanced because there are not the same amount of elements on the reactant side as there are on the product side. Therefore, it is not balanced

More Detailed: first example

Reactant side (left of arrow)

H: 2

C: 1

O: 3

Product side (right of arrow)

H: 2

C: 1

O: 3

More detailed: second example

Reactant side:

Na: 1

O: 1

H: 1

C: 1

Product side:

Na: 2

O: 4

H: 2

C: 1

the variables needed to balance this equation is 2,1, 1, 1.