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3 years ago

What does a high melting point temperature indicate about a substance?

Chemistry

2 answers:

ANEK [815]3 years ago

8 0

Answer:

Strong intramolecular forces hold the atoms together

Explanation:

ap3x

Lilit [14]3 years ago

3 0

They have strong intermolecular forces between their atoms, hence why more heat is necessary.

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The Gulf Stream flows along the equator before turning north along Florida’s east coast. How does the Gulf Stream impact Florida

nignag [31]

Answer:

The Gulf Stream is influential on the climate of the Florida peninsula.East winds moving over this warm water move warm air from over the Gulf Stream inland, helping to keep temperatures milder across the state than elsewhere across the Southeastern United States during the winter.

Explanation:

hope this helps!

8 0

2 years ago

Read 2 more answers

Is lithium a metal metalloid or non metal

KiRa [710]

Answer:

Metal

Explanation:

Lithium (Li), chemical element of Group 1 (Ia) in the periodic table, the alkali metal group, lightest of the solid elements. The metal itself—which is soft, white, and lustrous—and several of its alloys and compounds are produced on an industrial scale.

Atomic number: 3

Atomic weight: 6.941

5 0

3 years ago

Helium is an odorless, colorless gas at room temperature. It is less dense than air. That's why helium balloons float. It is a n

Zolol [24]

Answer:

Non-flammable
It is the only element that doesn't solidify under ordinary pressure and remains a liquid enven at absolute zero.
When it electricity runs through helium it glows a pale peach color.

5 0

3 years ago

1. Imagine you have a sealed 20.0 L balloon filled with helium gas at 750 mmHg in the

SVETLANKA909090 [29]

Answer:

17.6510 L

Explanation:

First we should get the number of moles of helium here by Boyle's law

PV=nRT

P=750/760= 0.9868 atm

T=25+273=298 kelvin

R= 0.08206

V= 20L

n=PV/RT

n=0.9868×20/0.08206×298

n=0.80707 mol

Then use the same law

V=0.80707×0.08206×263/0.9869=

17.6510L

SO THE VOLUME WILL BE 17.6510 L

6 0

2 years ago

How many grams of phosphorus are in 500.0 grams of calcium phosphide? (i need the work also)

kvv77 [185]

Answer:

$\boxed{\text{170.0 g P}}$

Explanation:

The formula of calcium nitride is Ca₃P₂.

The masses of each element are:

$\begin{array}{lrcr}\text{3Ca:} & 3 \times 40.08&=& \text{120.24 u}\\\text{2P:} & 2\times 30.97&=& \text{61.94 u}\\& \text{TOTAL} & = & \text{182.18 u}\\\end{array}$

So, there are 61.94 g of P in 182.18 g of Ca₃P₂.

In 500 g of Ca₃P₂:

$\text{Mass of P} = \text{500.0 g Ca$_{3}$P$_{2}$} \times \dfrac{\text{61.94 g P}}{\text{182.18 g Ca$_{3}$P$_{2}$}} = \text{170.0 g P}$

There are $\boxed{\textbf{170.0 g P}}$ in 500.0 g of Ca₃P₂.

3 0

3 years ago