3 years ago

When a lithium atom forms an Li+ ion, the lithium atom

Chemistry

2 answers:

Sholpan [36]3 years ago

7 0

Answer:

Explanation:

gizmo_the_mogwai [7]3 years ago

3 0

4, loses an electron. a plus sign indicates an atom is losing an electron while a minus sign indicates an atom is gaining an electron
hope this helps!

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Which atoms combine together during fusion reaction on the sun?

shusha [124]

Answer:

Hydrogen

Explanation:

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3 years ago

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Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→C

GREYUIT [131]

Answer:

$m=8.79kg$

Explanation:

First of all we need to calculate the heat that the water in the cooler is able to release:

$Q=\rho * V*Cp*\Delta T$

Where:

Cp is the mass heat capacity of water
V is the volume
$\rho$ is the density

$Q=1 g/cm^3 *15000 cm^3*4.184 \frac{J}{g*^{\circ}C}*(10-90)^{\circ}C$

$Q=-5020800 J=-5020.8 kJ$

To calculate the mass of CO2 that sublimes:

$-Q=\Delta H_{sub}*m$

Knowing that the enthalpy of sublimation for the CO2 is: $\Delta H_{sub}=571 kJ/kg$

$5020.8 kJ=571 kJ/kg*m$

$m=\frac{5020.8 kJ}{571 kJ/kg}=8.79kg$

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2 years ago

Express the following quantity in scientific notation. The answer needs to have the correct number of significant figures. 21,30

melisa1 [442]

2.13 x 10 E 7 i believe this is correct

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3 years ago

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What is chemical reaction ?

butalik [34]

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Explanation:

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3 years ago

Which has more neutrons: Cobalt or Nickel?

Inessa05 [86]

Answer:

Because the most common form of Nickel is Ni-58 while the most common form of Cobalt is Co-59, this means that Cobalt (which is number 27 on the periodic table) has 27 protons and 32 neutrons. Therefore 1 less proton but 2 more neutrons and hence has a greater mass than Nickel.

Explanation:

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2 years ago