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Zigmanuir [339]
3 years ago
6

What two pieces of information do u need to describe force

Chemistry
2 answers:
BlackZzzverrR [31]3 years ago
8 0
Mass and velocity are both factors needed to calculate force <span />
ss7ja [257]3 years ago
3 0

Answer : Mass and distance.

Explanation : The strength of the force between two objects mainly depends on two factors, one is mass and the other is distance.

The force of gravity that masses exert on each other is of great influencing factor. For example, if one of the masses is doubled, the force between the objects is doubled then the force between them increases.

When the distance between the objects is increased, then the force is found to decrease. For example, If the distance is doubled, then the force becomes one-fourth strong as it was before.

Force, it is often expressed as the product of mass and acceleration, and can be expressed as;

F = m x a;

where F - Force;

m - mass;

a - acceleration due to gravity.

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Which compound contains both ionic and covalent bonds? 1.  ki 2.  cacl2 3.  ch2br2 4.  nacn?
Savatey [412]
<span>NaCn contains an Na+ ion and a CN- negative ion, so it has an ionic bond. The CN ion is formed by a covalent bond of the carbon and nitrogen, so it also has a covalent bond. Therefore, the answer is NaCN.</span>
4 0
2 years ago
Read 2 more answers
Express the following in liters at STP:<br><br><br><br> 6.62 x 10-3 moles HF
serious [3.7K]

Answer:

The volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L

Explanation:

Given data:

Number of moles of HF =  6.62×10⁻³ mol

Volume of HF in litter at STP = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Standard temperature = 273 K

Standard pressure = 1 atm

Now we will put the values in formula.

1 atm × V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K   × 273 K

V = 6.62×10⁻³mol ×0.0821 atm.L/ mol.K   × 273 K  / 1 atm

V = 148.38×10⁻³ L

Thus, the volume of 6.62×10⁻³moles of HF at STP is 148.38×10⁻³ L.

8 0
3 years ago
Which of the following is a physical property of water?
Kamila [148]
Water is NOT flammable.
6 0
3 years ago
If a 0.7 M solution of Ca(OH)2 dissociates completely in water, what is the<br> final [OH-]?
IceJOKER [234]

Answer:

1.40 M [OH⁻]

Explanation:

This compound dissociates into 3 ions, but since we are asked about [OH⁻], it's only 2. Therefore, multiply the molarity of the solution by the number of ions that [OH⁻] dissociates into:

2 × 0.70 M = 1.40 M

Hope this helps! Sorry that you got a link. Those are getting really annoying

3 0
3 years ago
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane, n the mixture is 330 mm Hg and
Thepotemich [5.8K]
b is the correct answer
4 0
3 years ago
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