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2 years ago

6

A blood test shows clumps only in wells containing anti-A and anti-B antibodies. The Rhesus test was negative. Which is the corr

ect blood type?
A) A-

B) B+

C) A+

D) AB-

1 answer:

enyata [817]2 years ago

3 0

The correct blood type is AB-

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If I contain 3 moles of gas in a container with a volume of 60 liters and at a

viktelen [127]

Answer: n = 3.0 moles

V = 60.0 L

T = 400 K

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Copper(II) sulfide is oxidized b molecular oxygen to produce gaseous sulfur trioxide and solid copper (II) oxide. The gaseous pr

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Explanation:

Copper(II) sulfide reacts with oxygen gas to give solid copper(II) oxide and sulfur trioxide gas.

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2 years ago

A filament of a light bulb is made from a pure sample of tungsten.

GenaCL600 [577]

Answer:

The correct options are:

1) Pure chemical substance

2) Element.

Explanation:

each of the term is explained below:

1) <u>Mixture: </u> Since tungsten is an element in periodic table thus it is not a mixture.

2) False by definition of mixture.

3) false by definition of mixture.

4) <u>Solution:</u> Tungsten in a filament is in solid form hence solution is incorrect.

5) Since it is given in the question itself that the sample is pure hence option 'E' is correct as chemical substance is a pure substance that has a homogeneous composition and the sample in the question is given as pure.

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7) Tungsten is a element in the periodic table with atomic number 74.

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Sodium represents by the (Na).

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gizmo_the_mogwai [7]

7.9×10^-1 Kg/m³

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